Split (1)

train · 367k rows

text stringlengths 9 2.4k
Improvements in instruction pipelining led to further decreases in the idle time of CPU components. Designs that are said to be superscalar include a long instruction pipeline and multiple identical execution units, such as load–store units, arithmetic–logic units, floating-point units and address generation units. In a superscalar pipeline, instructions are read and passed to a dispatcher, which decides whether or not the instructions can be executed in parallel (simultaneously). If so, they are dispatched to execution units, resulting in their simultaneous execution. In general, the number of instructions that a superscalar CPU will complete in a cycle is dependent on the number of instructions it is able to dispatch simultaneously to execution units.
When a fraction of the CPU is superscalar, the part that is not suffers a performance penalty due to scheduling stalls. The Intel P5 Pentium had two superscalar ALUs which could accept one instruction per clock cycle each, but its FPU could not. Thus the P5 was integer superscalar but not floating point superscalar. Intel's successor to the P5 architecture, P6, added superscalar abilities to its floating-point features. Simple pipelining and superscalar design increase a CPU's ILP by allowing it to execute instructions at rates surpassing one instruction per clock cycle. Most modern CPU designs are at least somewhat superscalar, and nearly all general purpose CPUs designed in the last decade are superscalar. In later years some of the emphasis in designing high-ILP computers has been moved out of the CPU's hardware and into its software interface, or instruction set architecture (ISA). The strategy of the very long instruction word (VLIW) causes some ILP to become implied directly by the software, reducing the CPU's work in boosting ILP and thereby reducing design complexity.
Task-level parallelism. Another strategy of achieving performance is to execute multiple threads or processes in parallel. This area of research is known as parallel computing. In Flynn's taxonomy, this strategy is known as multiple instruction stream, multiple data stream (MIMD). One technology used for this purpose is multiprocessing (MP). The initial type of this technology is known as symmetric multiprocessing (SMP), where a small number of CPUs share a coherent view of their memory system. In this scheme, each CPU has additional hardware to maintain a constantly up-to-date view of memory. By avoiding stale views of memory, the CPUs can cooperate on the same program and programs can migrate from one CPU to another. To increase the number of cooperating CPUs beyond a handful, schemes such as non-uniform memory access (NUMA) and directory-based coherence protocols were introduced in the 1990s. SMP systems are limited to a small number of CPUs while NUMA systems have been built with thousands of processors. Initially, multiprocessing was built using multiple discrete CPUs and boards to implement the interconnect between the processors. When the processors and their interconnect are all implemented on a single chip, the technology is known as chip-level multiprocessing (CMP) and the single chip as a multi-core processor.
It was later recognized that finer-grain parallelism existed with a single program. A single program might have several threads (or functions) that could be executed separately or in parallel. Some of the earliest examples of this technology implemented input/output processing such as direct memory access as a separate thread from the computation thread. A more general approach to this technology was introduced in the 1970s when systems were designed to run multiple computation threads in parallel. This technology is known as multi-threading (MT). The approach is considered more cost-effective than multiprocessing, as only a small number of components within a CPU are replicated to support MT as opposed to the entire CPU in the case of MP. In MT, the execution units and the memory system including the caches are shared among multiple threads. The downside of MT is that the hardware support for multithreading is more visible to software than that of MP and thus supervisor software like operating systems have to undergo larger changes to support MT. One type of MT that was implemented is known as temporal multithreading, where one thread is executed until it is stalled waiting for data to return from external memory. In this scheme, the CPU would then quickly context switch to another thread which is ready to run, the switch often done in one CPU clock cycle, such as the UltraSPARC T1. Another type of MT is simultaneous multithreading, where instructions from multiple threads are executed in parallel within one CPU clock cycle.
For several decades from the 1970s to early 2000s, the focus in designing high performance general purpose CPUs was largely on achieving high ILP through technologies such as pipelining, caches, superscalar execution, out-of-order execution, etc. This trend culminated in large, power-hungry CPUs such as the Intel Pentium 4. By the early 2000s, CPU designers were thwarted from achieving higher performance from ILP techniques due to the growing disparity between CPU operating frequencies and main memory operating frequencies as well as escalating CPU power dissipation owing to more esoteric ILP techniques. CPU designers then borrowed ideas from commercial computing markets such as transaction processing, where the aggregate performance of multiple programs, also known as throughput computing, was more important than the performance of a single thread or process. This reversal of emphasis is evidenced by the proliferation of dual and more core processor designs and notably, Intel's newer designs resembling its less superscalar P6 architecture. Late designs in several processor families feature chip-level multiprocessing, including the x86-64 Opteron and Athlon 64 X2, the SPARC UltraSPARC T1, IBM POWER4 and POWER5, as well as several video game console CPUs like the Xbox 360's triple-core PowerPC design, and the PlayStation 3's 7-core Cell microprocessor.
Data parallelism. A less common but increasingly important paradigm of processors (and indeed, computing in general) deals with data parallelism. The processors discussed earlier are all referred to as some type of scalar device. As the name implies, vector processors deal with multiple pieces of data in the context of one instruction. This contrasts with scalar processors, which deal with one piece of data for every instruction. Using Flynn's taxonomy, these two schemes of dealing with data are generally referred to as "single instruction" stream, "multiple data" stream (SIMD) and "single instruction" stream, "single data" stream (SISD), respectively. The great utility in creating processors that deal with vectors of data lies in optimizing tasks that tend to require the same operation (for example, a sum or a dot product) to be performed on a large set of data. Some classic examples of these types of tasks include multimedia applications (images, video and sound), as well as many types of scientific and engineering tasks. Whereas a scalar processor must complete the entire process of fetching, decoding and executing each instruction and value in a set of data, a vector processor can perform a single operation on a comparatively large set of data with one instruction. This is only possible when the application tends to require many steps which apply one operation to a large set of data.
Most early vector processors, such as the Cray-1, were associated almost exclusively with scientific research and cryptography applications. However, as multimedia has largely shifted to digital media, the need for some form of SIMD in general-purpose processors has become significant. Shortly after inclusion of floating-point units started to become commonplace in general-purpose processors, specifications for and implementations of SIMD execution units also began to appear for general-purpose processors in the mid-1990s. Some of these early SIMD specifications – like HP's Multimedia Acceleration eXtensions (MAX) and Intel's MMX – were integer-only. This proved to be a significant impediment for some software developers, since many of the applications that benefit from SIMD primarily deal with floating-point numbers. Progressively, developers refined and remade these early designs into some of the common modern SIMD specifications, which are usually associated with one instruction set architecture (ISA). Some notable modern examples include Intel's Streaming SIMD Extensions (SSE) and the PowerPC-related AltiVec (also known as VMX).
Hardware performance counter. Many modern architectures (including embedded ones) often include hardware performance counters (HPC), which enables low-level (instruction-level) collection, benchmarking, debugging or analysis of running software metrics. HPC may also be used to discover and analyze unusual or suspicious activity of the software, such as return-oriented programming (ROP) or sigreturn-oriented programming (SROP) exploits etc. This is usually done by software-security teams to assess and find malicious binary programs. Many major vendors (such as IBM, Intel, AMD, and Arm) provide software interfaces (usually written in C/C++) that can be used to collect data from the CPU's registers in order to get metrics. Operating system vendors also provide software like codice_1 (Linux) to record, benchmark, or trace CPU events running kernels and applications. Hardware counters provide a low-overhead method for collecting comprehensive performance metrics related to a CPU's core elements (functional units, caches, main memory, etc.) – a significant advantage over software profilers. Additionally, they generally eliminate the need to modify the underlying source code of a program. Because hardware designs differ between architectures, the specific types and interpretations of hardware counters will also change.
Privileged modes. Most modern CPUs have privileged modes to support operating systems and virtualization. Cloud computing can use virtualization to provide virtual central processing units (vCPUs) for separate users. A host is the virtual equivalent of a physical machine, on which a virtual system is operating. When there are several physical machines operating in tandem and managed as a whole, the grouped computing and memory resources form a cluster. In some systems, it is possible to dynamically add and remove from a cluster. Resources available at a host and cluster level can be partitioned into resources pools with fine granularity. Performance. The "performance" or "speed" of a processor depends on, among many other factors, the clock rate (generally given in multiples of hertz) and the instructions per clock (IPC), which together are the factors for the instructions per second (IPS) that the CPU can perform. Many reported IPS values have represented "peak" execution rates on artificial instruction sequences with few branches, whereas realistic workloads consist of a mix of instructions and applications, some of which take longer to execute than others. The performance of the memory hierarchy also greatly affects processor performance, an issue barely considered in IPS calculations. Because of these problems, various standardized tests, often called "benchmarks" for this purpose such as SPECint have been developed to attempt to measure the real effective performance in commonly used applications.
Processing performance of computers is increased by using multi-core processors, which essentially is plugging two or more individual processors (called "cores" in this sense) into one integrated circuit. Ideally, a dual core processor would be nearly twice as powerful as a single core processor. In practice, the performance gain is far smaller, only about 50%, due to imperfect software algorithms and implementation. Increasing the number of cores in a processor (i.e. dual-core, quad-core, etc.) increases the workload that can be handled. This means that the processor can now handle numerous asynchronous events, interrupts, etc. which can take a toll on the CPU when overwhelmed. These cores can be thought of as different floors in a processing plant, with each floor handling a different task. Sometimes, these cores will handle the same tasks as cores adjacent to them if a single core is not enough to handle the information. Multi-core CPUs enhance a computer's ability to run several tasks simultaneously by providing additional processing power. However, the increase in speed is not directly proportional to the number of cores added. This is because the cores need to interact through specific channels, and this inter-core communication consumes a portion of the available processing speed.
Due to specific capabilities of modern CPUs, such as simultaneous multithreading and uncore, which involve sharing of actual CPU resources while aiming at increased utilization, monitoring performance levels and hardware use gradually became a more complex task. As a response, some CPUs implement additional hardware logic that monitors actual use of various parts of a CPU and provides various counters accessible to software; an example is Intel's "Performance Counter Monitor" technology. Overclocking. Overclocking is a process of increasing the clock speed of a CPU (and other components) to increase the performance of the CPU. Overclocking might increase CPU temperature and cause it to overheat, so most users do not overclock and leave the clock speed unchanged. Some versions of components (such as Intel's U version of its CPUs or Nvidia's OG GPUs) do not allow overclocking.
Carnivora Carnivora ( ) is an order of placental mammals specialized primarily in eating flesh, whose members are formally referred to as carnivorans. The order Carnivora is the sixth largest order of mammals, comprising at least 279 species. Carnivorans are found on every major landmass and in a variety of habitats, ranging from the cold polar regions of Earth to the hyper-arid region of the Sahara Desert and the open seas. Carnivorans exhibit a wide array of body plans, varying greatly in size and shape. Carnivora are divided into two suborders, the Feliformia, containing the true felids and several animals; and the Caniformia, containing the true canids and many animals. The feliforms include the Felidae, Viverridae, hyena, and mongoose families, the majority of which live only in the Old World; cats are the only exception, occurring in the Old World and the New World, entering the Americas via the Bering land bridge. The caniforms include the Caninae, Procyonidae, bears, mustelids, skunks, and pinnipeds that occur worldwide with immense diversity in their morphology, diet, and behavior.
Etymology. The word "Carnivora" is derived from Latin "carō" (stem "carn-") 'flesh' and "vorāre" 'to devour'. Phylogeny. The oldest known carnivoran line mammals (Carnivoramorpha) appeared in North America 6 million years after the Cretaceous–Paleogene extinction event. These early ancestors of carnivorans would have resembled small weasel or genet-like mammals, occupying a nocturnal shift on the forest floor or in the trees, as other groups of mammals like the mesonychians and later the creodonts were occupying the megafaunal faunivorous niche. However, following the extinction of mesonychians and the oxyaenid creodonts at the end of the Eocene, carnivorans quickly moved into this niche, with forms like the nimravids being the dominant large-bodied ambush predators during the Oligocene alongside the hyaenodont creodonts (which similarly produced larger, more open-country forms at the start of the Oligocene). By the time Miocene epoch appeared, most if not all of the major lineages and families of carnivorans had diversified and become the most dominant group of large terrestrial predators in Eurasia and North America, with various lineages being successful in megafaunal faunivorous niches at different intervals during the Miocene and later epochs.
Systematics. Evolution. The order Carnivora belongs to a group of mammals known as Laurasiatheria, which also includes other groups such as bats and ungulates. Within this group the carnivorans are placed in the clade Ferae. Ferae includes the closest extant relative of carnivorans, the pangolins, as well as several extinct groups of mostly Paleogene carnivorous placentals such as the creodonts, the arctocyonians, and mesonychians. The creodonts were originally thought of as the sister taxon to the carnivorans, perhaps even ancestral to, based on the presence of the carnassial teeth, but the nature of the carnassial teeth is different between the two groups. In carnivorans, the carnassials are positioned near the front of the molar row, while in the creodonts, they are positioned near the back of the molar row, and this suggests a separate evolutionary history and an order-level distinction. In addition, phylogenetic analysis suggests that creodonts are more closely related to pangolins while mesonychians might be the sister group to carnivorans and their stem-relatives.
The closest stem-carnivorans are the miacoids. The miacoids include the families Viverravidae and Miacidae, and together the Carnivora and Miacoidea form the stem-clade Carnivoramorpha. The miacoids were small, genet-like carnivoramorphs that occupy a variety of niches such as terrestrial and arboreal habitats. Studies have shown that while viverravids are a monophyletic basal group, the miacids are paraphyletic with respect to Carnivora (as shown in the phylogeny below). Carnivoramorpha as a whole first appeared in the Paleocene of North America about 60 million years ago. Crown carnivorans first appeared around 42 million years ago in the Middle Eocene. Their molecular phylogeny shows the extant Carnivora are a monophyletic group, the crown group of the Carnivoramorpha. From there carnivorans have split into two clades based on the composition of the bony structures that surround the middle ear of the skull, the cat-like feliforms and the dog-like caniforms. In feliforms, the auditory bullae are double-chambered, composed of two bones joined by a septum. Caniforms have single-chambered or partially divided auditory bullae, composed of a single bone. Initially, the early representatives of carnivorans were small as the creodonts (specifically, the oxyaenids) and mesonychians dominated the apex predator niches during the Eocene, but in the Oligocene, carnivorans became a dominant group of apex predators with the nimravids, and by the Miocene most of the extant carnivoran families have diversified and become the primary terrestrial predators in the Northern Hemisphere.
Classification of the extant carnivorans. In 1758, the Swedish botanist Carl Linnaeus placed all carnivorans known at the time into the group Ferae (not to be confused with the modern concept of Ferae which also includes pangolins) in the tenth edition of his book "Systema Naturae". He recognized six genera: "Canis" (canids and hyaenids), "Phoca" (pinnipeds), "Felis" (felids), "Viverra" (viverrids, herpestids, and mephitids), "Mustela" (non-badger mustelids), "Ursus" (ursids, large species of mustelids, and procyonids). It was not until 1821 that the English writer and traveler Thomas Edward Bowdich gave the group its modern and accepted name. Initially, the modern concept of Carnivora was divided into two suborders: the terrestrial Fissipedia and the marine Pinnipedia. Below is the classification of how the extant families were related to each other after American paleontologist George Gaylord Simpson in 1945: Since then, however, the methods in which mammalogists use to assess the phylogenetic relationships among the carnivoran families has been improved with using more complicated and intensive incorporation of genetics, morphology and the fossil record. Research into Carnivora phylogeny since 1945 has found Fissipedia to be paraphyletic in respect to Pinnipedia, with pinnipeds being either more closely related to bears or to weasels. The small carnivoran families Viverridae, Procyonidae, and Mustelidae have been found to be polyphyletic:
Below is a table chart of the extant carnivoran families and number of extant species recognized by various authors of the first (2009) and fourth (2014) volumes of the "Handbook of the Mammals of the World": Anatomy. Skull. The canine teeth are usually large, conical, thick and stress resistant. All of the terrestrial species of carnivorans have three incisors on each side of each jaw (the exception is the sea otter ("Enhydra lutris") which only has two lower incisor teeth). The third molar has been lost. The carnassial pair is made up of the fourth upper premolar and the first lower molar teeth. Like most mammals, the dentition is heterodont, though in some species, such as the aardwolf ("Proteles cristata"), the teeth have been greatly reduced and the cheek teeth are specialised for eating insects. In pinnipeds, the teeth are homodont as they have evolved to grasp or catch fish, and the cheek teeth are often lost. In bears and raccoons, the carnassial pair is secondarily reduced. The skulls are heavily built with a strong zygomatic arch. Often a sagittal crest is present, sometimes more evident in sexually dimorphic species such as sea lions and fur seals, though it has also been greatly reduced in some small carnivorans. The braincase is enlarged with the frontoparietal bone at the front. In most species, the eyes are at the front of the face. In caniforms, the rostrum is usually long with many teeth, while in feliforms it is shorter with fewer teeth. The carnassial teeth of feliforms are generally more sectional than those of caniforms.
The turbinates are large and complex in comparison to other mammals, providing a large surface area for olfactory receptors. Postcranial region. Aside from an accumulation of characteristics in the dental and cranial features, not much of their overall anatomy unites carnivorans as a group. All species of carnivorans are quadrupedal and most have five digits on the front feet and four digits on the back feet. In terrestrial carnivorans, the feet have soft pads. The feet can either be digitigrade as seen in cats, hyenas, and dogs or plantigrade as seen in bears, skunks, raccoons, weasels, civets, and mongooses. In pinnipeds, the limbs have been modified into flippers. Unlike cetaceans and sirenians, which have fully functional tails to help them swim, pinnipeds use their limbs underwater to swim. Earless seals use their back flippers; sea lions and fur seals use their front flippers, and the walrus uses all of its limbs. As a result, pinnipeds have significantly shorter tails than other carnivorans. Aside from the pinnipeds, dogs, bears, hyenas, and cats all have distinct and recognizable appearances. Dogs are usually cursorial mammals and are gracile in appearance, often relying on their teeth to hold prey; bears are much larger and rely on their physical strength to forage for food. Compared to dogs and bears, cats have longer and stronger forelimbs armed with retractable claws to hold on to prey. Hyenas are dog-like feliforms that have sloping backs due to their front legs being longer than their hind legs. The raccoon family and red panda are small, bear-like carnivorans with long tails. The other small carnivoran families Nandiniidae, Prionodontidae, Viverridae, Herpestidae, Eupleridae, Mephitidae, and Mustelidae have through convergent evolution maintained the small, ancestral appearance of the miacoids, though there is some variation seen such as the robust and stout physicality of badgers and the wolverine ("Gulo gulo").
Most carnivoran species have a well-defined breeding season. Male carnivorans will usually have bacula, which are absent in hyenas and binturongs. The length and density of the fur can vary depending on the environment that the species inhabits. In warm climate species, the fur is often short in length and lighter. In cold climate species, the fur is can be either dense or long, often with an oily substance that helps to retain heat. The pelage coloration differs between species, often including black, white, orange, yellow, red, and many shades of grey and brown. Some are striped, spotted, blotched, banded, or otherwise boldly patterned. There may be a correlation between habitat and color pattern; for example, spotted or banded species tend to be found in heavily forested environments. Some species like the grey wolf are polymorphic with different individual having different coat colors. The arctic fox ("Vulpes lagopus") and the stoat ("Mustela erminea") have fur that changes from white and dense in the winter to brown and sparse in the summer. In pinnipeds and polar bears, a thick insulating layer of blubber helps maintain their body temperature.
Relationship with humans. Carnivorans are arguably the group of mammals of most interest to humans. The dog is noteworthy for not only being the first species of carnivoran to be domesticated, but also the first species of any taxon. In the last 10,000 to 12,000 years, humans have selectively bred dogs for a variety of different tasks and today there are well over 400 breeds. The cat is another domesticated carnivoran and it is today considered one of the most successful species on the planet, due to their close proximity to humans and the popularity of cats as pets. Many other species are popular, and they are often charismatic megafauna. Many civilizations have incorporated a species of carnivoran into their culture: a prominent example is the lion, viewed as a symbol of power and royalty in many societies. Yet many species such as wolves and the big cats have been broadly hunted, resulting in extirpation in some areas. Habitat loss and human encroachment as well as climate change have been the primary cause of many species going into decline. Four species of carnivorans have gone extinct since the 1600s: Falkland Island wolf ("Dusicyon australis") in 1876; the sea mink ("Neogale macrodon") in 1894; the Japanese sea lion ("Zalophus japonicus") in 1951 and the Caribbean monk seal ("Neomonachus tropicalis") in 1952. Some species such as the red fox ("Vulpes vulpes") and stoat ("Mustela erminea") have been introduced to Australasia and have caused many native species to become endangered or even extinct.
Colombia Colombia, officially the Republic of Colombia, is a country primarily located in South America with insular regions in North America. The Colombian mainland is bordered by the Caribbean Sea to the north, Venezuela to the east and northeast, Brazil to the southeast, Peru and Ecuador to the south and southwest, the Pacific Ocean to the west, and Panama to the northwest. Colombia is divided into 32 departments. The Capital District of Bogotá is also the country's largest city hosting the main financial and cultural hub. Other major urban areas include Medellín, Cali, Barranquilla, Cartagena, Santa Marta, Cúcuta, Ibagué, Villavicencio and Bucaramanga. It covers an area of 1,141,748 square kilometers (440,831 sq mi) and has a population of around 52 million. Its rich cultural heritage—including language, religion, cuisine, and art—reflects its history as a colony, fusing cultural elements brought by immigration from Europe and the Middle East, with those brought by the African diaspora, as well as with those of the various Indigenous civilizations that predate colonization. Spanish is the official language, although Creole, English and 64 other languages are recognized regionally.
Colombia has been home to many indigenous peoples and cultures since at least 12,000 BCE. The Spanish first landed in La Guajira in 1499, and by the mid-16th century, they had colonized much of present-day Colombia, and established the New Kingdom of Granada, with Santa Fe de Bogotá as its capital. Independence from the Spanish Empire is considered to have been declared in 1810, with what is now Colombia emerging as the United Provinces of New Granada. After a brief Spanish reconquest, Colombian independence was secured and the period of Gran Colombia began in 1819. The new polity experimented with federalism as the Granadine Confederation (1858) and then the United States of Colombia (1863), before becoming a centralised republic—the current Republic of Colombia—in 1886. With the backing of the United States and France, Panama seceded from Colombia in 1903, resulting in Colombia's present borders. Beginning in the 1960s, the country has suffered from an asymmetric low-intensity armed conflict and political violence, both of which escalated in the 1990s. Since 2005, there has been significant improvement in security, stability, and rule of law, as well as unprecedented economic growth and development. Colombia is recognized for its healthcare system, being the best healthcare in Latin America according to the World Health Organization and 22nd in the world. Its diversified economy is the third-largest in South America, with macroeconomic stability and favorable long-term growth prospects.
Colombia is one of the world's seventeen megadiverse countries; it has the highest level of biodiversity per square mile in the world and the second-highest level overall. Its territory encompasses Amazon rainforest, highlands, grasslands and deserts. It is the only country in South America with coastlines (and islands) along both the Atlantic and Pacific oceans. Colombia is a key member of major global and regional organizations including the UN, the WTO, the OECD, the OAS, the Pacific Alliance and the Andean Community; it is also a NATO Global Partner and a major non-NATO ally of the United States. Etymology. The name "Colombia" is derived from the last name of the Italian navigator Christopher Columbus (, , ). It was conceived as a reference to all of the New World. The name was later adopted by the Republic of Colombia of 1819, formed from the territories of the old Viceroyalty of New Granada (modern-day Colombia, Panama, Venezuela, Ecuador, and northwest Brazil). When Venezuela, Ecuador, and Cundinamarca came to exist as independent states, the former Department of Cundinamarca adopted the name "Republic of New Granada". New Granada officially changed its name in 1858 to the Granadine Confederation. In 1863 the name was again changed, this time to United States of Colombia, before finally adopting its present name – the Republic of Colombia – in 1886.
To refer to this country, the Colombian government uses the terms and . History. Pre-Columbian era. Owing to its location, the present territory of Colombia was a corridor of early human civilization from Mesoamerica and the Caribbean to the Andes and Amazon basin. The oldest archaeological finds are from the Pubenza and El Totumo sites in the Magdalena Valley southwest of Bogotá. These sites date from the Paleoindian period (18,000–8000 BCE). At Puerto Hormiga and other sites, traces from the Archaic Period (~8000–2000 BCE) have been found. Vestiges indicate that there was also early occupation in the regions of El Abra and Tequendama in Cundinamarca. The oldest pottery discovered in the Americas, found in San Jacinto, dates to 5000–4000 BCE. Indigenous people inhabited the territory that is now Colombia by 12,500 BCE. Nomadic hunter-gatherer tribes at the El Abra, Tibitó and Tequendama sites near present-day Bogotá traded with one another and with other cultures from the Magdalena River Valley. A site including of pictographs that is under study at Serranía de la Lindosa was revealed in November 2020. Their age is suggested as being 12,500 years old (c. 10,480 B.C.) by the anthropologists working on the site, because of extinct fauna depicted. It was during the earliest known human occupation of the area.
Between 5000 and 1000 BCE, hunter-gatherer tribes transitioned to agrarian societies; fixed settlements were established, and pottery appeared. Beginning in the 1st millennium BCE, groups of Amerindians including the Muisca, Zenú, Quimbaya, and Tairona developed the political system of "cacicazgos" with a pyramidal structure of power headed by "caciques". The Muisca inhabited mainly the area of what is now the Departments of Boyacá and Cundinamarca high plateau ("Altiplano Cundiboyacense") where they formed the Muisca Confederation. They farmed maize, potato, quinoa, and cotton, and traded gold, emeralds, blankets, ceramic handicrafts, coca and especially rock salt with neighboring nations. The Tairona inhabited northern Colombia in the isolated mountain range of Sierra Nevada de Santa Marta. The Quimbaya inhabited regions of the Cauca River Valley between the Western and Central Ranges of the Colombian Andes. Most of the Amerindians practiced agriculture and the social structure of each indigenous community was different. Some groups of indigenous people such as the Caribs lived in a state of permanent war, but others had less bellicose attitudes. During the 1200s, Malayo-Polynesians and Native Americans in Colombia made contact, thereby spreading Native American genetics from Precolonial Colombia to some Pacific Ocean islands.
Colonial period. Alonso de Ojeda (who had sailed with Columbus) reached the Guajira Peninsula in 1499. Spanish explorers, led by Rodrigo de Bastidas, made the first exploration of the Caribbean coast in 1500. Christopher Columbus navigated near the Caribbean in 1502. In 1508, Vasco Núñez de Balboa accompanied an expedition to the territory through the region of Gulf of Urabá and they founded the town of Santa María la Antigua del Darién in 1510, the first stable settlement on the continent. Santa Marta was founded in 1525, and Cartagena in 1533. Spanish conquistador Gonzalo Jiménez de Quesada led an expedition to the interior in April 1536, and christened the districts through which he passed "New Kingdom of Granada". In August 1538, he provisionally founded its capital near the Muisca cacicazgo of Muyquytá, and named it "Santa Fe". The name soon acquired a suffix and was called Santa Fe de Bogotá. Two other notable journeys by early conquistadors to the interior took place in the same period. Sebastián de Belalcázar, conqueror of Quito, traveled north and founded Cali, in 1536, and Popayán, in 1537; from 1536 to 1539, German conquistador Nikolaus Federmann crossed the Llanos Orientales and went over the Cordillera Oriental in a search for El Dorado, the "city of gold". The legend and the gold would play a pivotal role in luring the Spanish and other Europeans to New Granada during the 16th and 17th centuries.
The conquistadors made frequent alliances with the enemies of different indigenous communities. Indigenous allies were crucial to conquest, as well as to creating and maintaining empire. Indigenous peoples in Colombia experienced a decline in population due to conquest as well as Eurasian diseases, such as smallpox, to which they had no immunity. Regarding the land as deserted, the Spanish Crown sold properties to all persons interested in colonized territories, creating large farms and possession of mines. In the 16th century, the nautical science in Spain reached a great development thanks to numerous scientific figures of the Casa de Contratación and nautical science was an essential pillar of the Iberian expansion. In 1542, the region of New Granada, along with all other Spanish possessions in South America, became part of the Viceroyalty of Peru, with its capital in Lima. In 1547, New Granada became a separate captaincy-general within the viceroyalty, with its capital at Santa Fe de Bogota. In 1549, the Royal Audiencia was created by a royal decree, and New Granada was ruled by the Royal Audience of Santa Fe de Bogotá, which at that time comprised the provinces of Santa Marta, Rio de San Juan, Popayán, Guayana and Cartagena. But important decisions were taken from the colony to Spain by the Council of the Indies.
In the 16th century, European slave traders had begun to bring enslaved Africans to the Americas. Spain was the only European power that did not establish factories in Africa to purchase slaves; the Spanish Empire instead relied on the asiento system, awarding merchants from other European nations the license to trade enslaved peoples to their overseas territories. This system brought Africans to Colombia, although many spoke out against the institution. The indigenous peoples could not be enslaved because they were legally subjects of the Spanish Crown. To protect the indigenous peoples, several forms of land ownership and regulation were established by the Spanish colonial authorities: "resguardos", "encomiendas" and "haciendas". However, secret anti-Spanish discontentment was already brewing for Colombians since Spain prohibited direct trade between the Viceroyalty of Peru, which included Colombia, and the Viceroyalty of New Spain, which included the Philippines, the source of Asian products like silk and porcelain which was in demand in the Americas. Illegal trade between Peruvians, Filipinos, and Mexicans continued in secret, as smuggled Asian goods ended up in Córdoba, Colombia, the distribution center for illegal Asian imports, due to the collusion between these peoples against the authorities in Spain. They settled and traded with each other while disobeying the forced Spanish monopoly.
The Viceroyalty of New Granada was established in 1717, then temporarily removed, and then re-established in 1739. Its capital was Santa Fé de Bogotá. This Viceroyalty included some other provinces of northwestern South America that had previously been under the jurisdiction of the Viceroyalties of New Spain or Peru and correspond mainly to today's Venezuela, Ecuador, and Panama. Bogotá became one of the principal administrative centers of the Spanish possessions in the New World, along with Lima and Mexico City, though it remained less developed compared to those two cities in several economic and logistical ways. Great Britain declared war on Spain in 1739, and the city of Cartagena quickly became a top target for the British. A massive British expeditionary force was dispatched to capture the city, but, after achieving initial inroads, devastating outbreaks of disease crippled their numbers, and the British were forced to withdraw. The battle became one of Spain's most decisive victories in the conflict, and secured Spanish dominance in the Caribbean until the Seven Years' War. The 18th-century priest, botanist, and mathematician José Celestino Mutis was delegated by Viceroy Antonio Caballero y Góngora to conduct an inventory of the nature of New Granada. Started in 1783, this became known as the Royal Botanical Expedition to New Granada. It classified plants and wildlife, and founded the first astronomical observatory in the city of Santa Fe de Bogotá. In July 1801 the Prussian scientist Alexander von Humboldt reached Santa Fe de Bogotá where he met with Mutis. In addition, historical figures in the process of independence in New Granada emerged from the expedition as the astronomer Francisco José de Caldas, the scientist Francisco Antonio Zea, the zoologist Jorge Tadeo Lozano and the painter Salvador Rizo.
Independence. Rebellions against Spanish rule had occurred in the empire since the advent of conquest and colonization, but most were either crushed or remained too weak to change the overall situation. The last one that sought outright independence from Spain sprang up around 1810 and culminated in the Colombian Declaration of Independence, issued on 20 July 1810, the day that is now celebrated as the nation's Independence Day. This movement followed the independence of Saint-Domingue (present-day Haiti) in 1804, which provided some support to an eventual leader of this rebellion: Simón Bolívar. Francisco de Paula Santander also would play a decisive role. A movement was initiated by Antonio Nariño, who opposed Spanish centralism and led the opposition against the Viceroyalty. Cartagena became independent in November 1811. In 1811, the United Provinces of New Granada were proclaimed, headed by Camilo Torres Tenorio. The emergence of two distinct ideological currents among the patriots (federalism and centralism) gave rise to a period of instability called the Patria Boba. Shortly after the Napoleonic Wars ended, Ferdinand VII, recently restored to the throne in Spain, unexpectedly decided to send military forces to retake most of northern South America. The viceroyalty was restored under the command of Juan de Sámano, whose regime punished those who participated in the patriotic movements, ignoring the political nuances of the juntas. The retribution stoked renewed rebellion, which, combined with a weakened Spain, made possible a successful rebellion led by the Venezuelan-born Simón Bolívar, who finally proclaimed independence in 1819. The pro-Spanish resistance was defeated in 1822 in the present territory of Colombia and in 1823 in Venezuela. During the Independence War, between 250 and 400 thousand people (12–20% of the pre-war population) died.
The territory of the Viceroyalty of New Granada became the Republic of Colombia, organized as a union of the current territories of Colombia, Panama, Ecuador, Venezuela, parts of Guyana and Brazil and north of Marañón River. The Congress of Cúcuta in 1821 adopted a constitution for the new Republic. Simón Bolívar became the first President of Colombia, and Francisco de Paula Santander was made Vice President. However, the new republic was unstable and the Gran Colombia ultimately collapsed. Modern Colombia comes from one of the countries that emerged after the dissolution of Gran Colombia, the other two being Ecuador and Venezuela. Colombia was the first constitutional government in South America, and the Liberal and Conservative parties, founded in 1848 and 1849, respectively, are two of the oldest surviving political parties in the Americas. Slavery was abolished in the country in 1851. Internal political and territorial divisions led to the dissolution of Gran Colombia in 1830. The so-called "Department of Cundinamarca" adopted the name "New Granada", which it kept until 1858 when it became the "Confederación Granadina" (Granadine Confederation). After a two-year civil war in 1863, the United States of Colombia was created, which became known as the Republic of Colombia in 1886. Internal divisions remained between the bipartisan political forces, occasionally igniting very bloody civil wars, the most significant being the Thousand Days' War (1899–1902), in which between 100 and 180 thousand Colombians lost their lives when the Liberal Party, supported by Venezuela, Ecuador, Nicaragua, and Guatemala rebelled against the Nationalist government and took control of Santander, ultimately being defeated in 1902 by nationalist forces. 20th century.
The United States of America's intentions to influence the area (especially the Panama Canal construction and control) led to the secession of the Department of Panama in 1903 and its political independence. The United States paid Colombia $25,000,000 in 1921, seven years after completion of the canal, for redress of President Roosevelt's role in the creation of Panama, and Colombia recognized Panama under the terms of the Thomson–Urrutia Treaty. Colombia and Peru went to war because of territory disputes far in the Amazon basin. The war ended with a peace deal brokered by the League of Nations. The League finally awarded the disputed area to Colombia in June 1934. Soon after, Colombia achieved some degree of political stability, which was interrupted by a bloody conflict that took place between the late 1940s and the early 1950s, a period known as "La Violencia" ("The Violence"). Its cause was mainly mounting tensions between the two leading political parties, which subsequently ignited after the assassination of the Liberal presidential candidate Jorge Eliécer Gaitán on 9 April 1948. The ensuing riots in Bogotá, known as El Bogotazo, spread throughout the country and claimed the lives of at least 180,000 Colombians.
Colombia entered the Korean War when Laureano Gómez was elected president. It was the only Latin American country to join the war in a direct military role as an ally of the United States. Particularly important was the resistance of the Colombian troops at Old Baldy. The violence between the two political parties decreased first when Gustavo Rojas deposed the President of Colombia in a coup d'état and negotiated with the guerrillas, and then under the military junta of General Gabriel París. After Rojas' deposition, the Colombian Conservative Party and the Colombian Liberal Party agreed to create the National Front, a coalition that would jointly govern the country. Under the deal, the presidency would alternate between conservatives and liberals every 4 years for 16 years; the two parties would have parity in all other elective offices. The National Front ended "La Violencia", and National Front administrations attempted to institute far-reaching social and economic reforms in cooperation with the Alliance for Progress. Despite the progress in certain sectors, many social and political problems continued, and guerrilla groups were formally created such as the FARC, the ELN and the M-19 to fight the government and political apparatus.
Since the 1960s, the country has suffered from an asymmetric low-intensity armed conflict between government forces, leftist guerrilla groups and right wing paramilitaries. The conflict escalated in the 1990s, mainly in remote rural areas. Since the beginning of the armed conflict, human rights defenders have fought for the respect for human rights, despite staggering opposition. Several guerrillas' organizations decided to demobilize after peace negotiations in 1989–1994. The United States has been heavily involved in the conflict since its beginnings, when in the early 1960s the U.S. government encouraged the Colombian military to attack leftist militias in rural Colombia. This was part of the U.S. fight against communism. Mercenaries and multinational corporations such as Chiquita Brands International are some of the international actors that have contributed to the violence of the conflict. Beginning in the mid-1970s Colombian drug cartels became major producers, processors and exporters of illegal drugs, primarily marijuana and cocaine.
On 4 July 1991, a new Constitution was promulgated. The changes generated by the new constitution are viewed as positive by Colombian society. 21st century. The administration of President Álvaro Uribe (2002–2010) adopted the democratic security policy which included an integrated counter-terrorism and counter-insurgency campaign. The government economic plan also promoted confidence in investors. As part of a controversial peace process, the AUC (right-wing paramilitaries) had ceased to function formally as an organization . In February 2008, millions of Colombians demonstrated against FARC and other outlawed groups. After peace negotiations in Cuba, the Colombian government of President Juan Manuel Santos and the guerrillas of the FARC-EP announced a final agreement to end the conflict. However, a referendum to ratify the deal was unsuccessful. Afterward, the Colombian government and the FARC signed a revised peace deal in November 2016, which the Colombian congress approved. In 2016, President Santos was awarded the Nobel Peace Prize. The Government began a process of attention and comprehensive reparation for victims of conflict. Colombia shows modest progress in the struggle to defend human rights, as expressed by HRW. A Special Jurisdiction of Peace has been created to investigate, clarify, prosecute and punish serious human rights violations and grave breaches of international humanitarian law which occurred during the armed conflict and to satisfy victims' right to justice. During his visit to Colombia, Pope Francis paid tribute to the victims of the conflict.
In June 2018, Iván Duque, the candidate of the right-wing Democratic Center party, won the presidential election. On 7 August 2018, he was sworn in as the new President of Colombia to succeed Juan Manuel Santos. Colombia's relations with Venezuela have fluctuated due to ideological differences between the two governments. Colombia has offered humanitarian support with food and medicines to mitigate the shortage of supplies in Venezuela. Colombia's Foreign Ministry said that all efforts to resolve Venezuela's crisis should be peaceful. Colombia proposed the idea of the Sustainable Development Goals and a final document was adopted by the United Nations. In February 2019, Venezuelan president Nicolás Maduro cut off diplomatic relations with Colombia after Colombian President Ivan Duque had helped Venezuelan opposition politicians deliver humanitarian aid to their country. Colombia recognized Venezuelan opposition leader Juan Guaidó as the country's legitimate president. In January 2020, Colombia rejected Maduro's proposal that the two countries restore diplomatic relations.
Protests started on 28 April 2021 when the government proposed a tax bill that would greatly expand the range of the 19 percent value-added tax. The 19 June 2022 election run-off vote ended in a win for former guerrilla, Gustavo Petro, taking 50.47% of the vote compared to 47.27% for independent candidate Rodolfo Hernández. The single-term limit for the country's presidency prevented President Iván Duque from seeking re-election. On 7 August 2022, Petro was sworn in, becoming the country's first leftist president. Geography. The geography of Colombia is characterized by its six main natural regions that present their unique characteristics, from the Andes mountain range region; the Pacific Coastal region; the Caribbean coastal region; the "Llanos" (plains); the Amazon rainforest region; to the insular area, comprising islands in both the Atlantic and Pacific oceans. It shares its maritime limits with Costa Rica, Nicaragua, Honduras, Jamaica, Haiti, and the Dominican Republic. Colombia is bordered to the northwest by Panama, to the east by Venezuela and Brazil, and to the south by Ecuador and Peru; it established its maritime boundaries with neighboring countries through seven agreements on the Caribbean Sea and three on the Pacific Ocean. It lies between latitudes 12°N and 4°S and between longitudes 67° and 79°W.
East of the Andes lies the savanna of the "Llanos", part of the Orinoco River basin, and in the far southeast, the jungle of the Amazon rainforest. Together these lowlands make up over half Colombia's territory, but they contain less than 6% of the population. To the north the Caribbean coast, home to 21.9% of the population and the location of the major port cities of Barranquilla and Cartagena, generally consists of low-lying plains, but it also contains the Sierra Nevada de Santa Marta mountain range, which includes the country's tallest peaks (Pico Cristóbal Colón and Pico Simón Bolívar), and the La Guajira Desert. By contrast the narrow and discontinuous Pacific coastal lowlands, backed by the Serranía de Baudó mountains, are sparsely populated and covered in dense vegetation. The principal Pacific port is Buenaventura. Part of the Ring of Fire, a region of the world subject to earthquakes and volcanic eruptions, in the interior of Colombia the Andes are the prevailing geographical feature. Most of Colombia's population centers are located in these interior highlands. Beyond the Colombian Massif (in the southwestern departments of Cauca and Nariño), these are divided into three branches known as "cordilleras" (mountain ranges): the Cordillera Occidental, running adjacent to the Pacific coast and including the city of Cali; the Cordillera Central, running between the Cauca and Magdalena River valleys (to the west and east, respectively) and including the cities of Medellín, Manizales, Pereira, and Armenia; and the Cordillera Oriental, extending northeast to the Guajira Peninsula and including Bogotá, Bucaramanga, and Cúcuta. Peaks in the Cordillera Occidental exceed , and in the Cordillera Central and Cordillera Oriental they reach . At , Bogotá is the highest city of its size in the world.
The main rivers of Colombia are Magdalena, Cauca, Guaviare, Atrato, Meta, Putumayo and Caquetá. Colombia has four main drainage systems: the Pacific drain, the Caribbean drain, the Orinoco Basin and the Amazon Basin. The Orinoco and Amazon Rivers mark limits with Colombia to Venezuela and Peru respectively. Climate. The climate of Colombia is characterized for being tropical presenting variations within six natural regions and depending on the altitude, temperature, humidity, winds and rainfall. Colombia has a diverse range of climate zones, including tropical rainforests, savannas, steppes, deserts and mountain climates. Mountain climate is one of the unique features of the Andes and other high altitude reliefs where climate is determined by elevation. Below in elevation is the warm altitudinal zone, where temperatures are above . About 82.5% of the country's total area lies in the warm altitudinal zone. The temperate climate altitudinal zone located between is characterized for presenting an average temperature ranging between . The cold climate is present between and the temperatures vary between . Beyond lies the alpine conditions of the forested zone and then the treeless grasslands of the páramos. Above , where temperatures are below freezing, the climate is glacial, a zone of permanent snow and ice.
Biodiversity and conservation. Colombia is one of the megadiverse countries in biodiversity, ranking first in bird species. Colombia is the country with the planet's highest biodiversity, having the highest rate of species by area as well as the largest number of endemisms (species that are not found naturally anywhere else) of any country. About 10% of the species of the Earth live in Colombia, including over 1,900 species of bird, more than in Europe and North America combined. Colombia has 10% of the world's mammals species, 14% of the amphibian species and 18% of the bird species of the world. As for plants, the country has between 40,000 and 45,000 plant species, equivalent to 10 or 20% of total global species, which is even more remarkable given that Colombia is considered a country of intermediate size. Colombia is the second most biodiverse country in the world, lagging only after Brazil which is approximately 7 times bigger. Colombia has about 2,000 species of marine fish and is the second most diverse country in freshwater fish. It is also the country with the most endemic species of butterflies, is first in orchid species, and has approximately 7,000 species of beetles. Colombia is second in the number of amphibian species and is the third most diverse country in reptiles and palms. There are about 1,900 species of mollusks and according to estimates there are about 300,000 species of invertebrates in the country. In Colombia there are 32 terrestrial biomes and 314 types of ecosystems.
Protected areas and the "National Park System" cover an area of about and account for 12.77% of the Colombian territory. Compared to neighboring countries, rates of deforestation in Colombia are still relatively low. Colombia had a 2018 Forest Landscape Integrity Index mean score of 8.26/10, ranking it 25th globally out of 172 countries. Colombia is the sixth country in the world by magnitude of total renewable freshwater supply, and still has large reserves of freshwater. Government and politics. The government of Colombia takes place within the framework of a presidential participatory democratic republic as established in the Constitution of 1991. In accordance with the principle of separation of powers, government is divided into three branches: the executive branch, the legislative branch and the judicial branch. As the head of the executive branch, the President of Colombia serves as both head of state and head of government, followed by the Vice President and the Council of Ministers. The president is elected by popular vote to serve a single four-year term (In 2015, Colombia's Congress approved the repeal of a 2004 constitutional amendment that changed the one-term limit for presidents to a two-term limit). At the provincial level executive power is vested in department governors, municipal mayors and local administrators for smaller administrative subdivisions, such as "corregimientos" or "comunas". All regional elections are held one year and five months after the presidential election.
The legislative branch of government is represented nationally by the Congress, a bicameral institution comprising a 166-seat Chamber of Representatives and a 102-seat Senate. The Senate is elected nationally and the Chamber of Representatives is elected in electoral districts. Members of both houses are elected to serve four-year terms two months before the president, also by popular vote. The judicial branch is headed by four high courts, consisting of the Supreme Court which deals with penal and civil matters, the Council of State, which has special responsibility for administrative law and also provides legal advice to the executive, the Constitutional Court, responsible for assuring the integrity of the Colombian constitution, and the Superior Council of Judicature, responsible for auditing the judicial branch. Colombia operates a system of civil law, which since 1991 has been applied through an adversarial system.
Foreign affairs. The foreign affairs of Colombia are headed by the President, as head of state, and managed by the Minister of Foreign Affairs. Colombia has diplomatic missions in all continents. Colombia was one of the four founding members of the Pacific Alliance, which is a political, economic and co-operative integration mechanism that promotes the free circulation of goods, services, capital and persons between the members, as well as a common stock exchange and joint embassies in several countries. Colombia is also a member of the United Nations, the World Trade Organization, the Organisation for Economic Co-operation and Development, the Organization of American States, the Organization of Ibero-American States, and the Andean Community of Nations. Colombia is a global partner of NATO and a major non-NATO ally of the United States. Military. The executive branch of government is responsible for managing the defense of Colombia, with the President commander-in-chief of the armed forces. The Ministry of Defence exercises day-to-day control of the military and the Colombian National Police. Colombia has 455,461 active military personnel. In 2016, 3.4% of the country's GDP went towards military expenditure, placing it 24th in the world. Colombia's armed forces are the largest in Latin America, and it is the second largest spender on its military after Brazil. In 2018, Colombia signed the UN treaty on the Prohibition of Nuclear Weapons.
The Colombian military is divided into three branches: the National Army of Colombia; the Colombian Aerospace Force; and the Colombian Navy. The National Police functions as a gendarmerie, operating independently from the military as the law enforcement agency for the entire country. Each of these operates with their own intelligence apparatus separate from the National Intelligence Directorate (DNI, in Spanish). The National Army is formed by divisions, brigades, special brigades, and special units, the Colombian Navy by the Naval Infantry, the Naval Force of the Caribbean, the Naval Force of the Pacific, the Naval Force of the South, the Naval Force of the East, Colombia Coast Guards, Naval Aviation, and the Specific Command of San Andres y Providencia and the Aerospace Force by 15 air units. Administrative divisions. Colombia is divided into 32 departments and one capital district, which is treated as a department (Bogotá also serves as the capital of the department of Cundinamarca). Departments are subdivided into municipalities, each of which is assigned a municipal seat, and municipalities are in turn subdivided into "corregimientos" in rural areas and into "comunas" in urban areas. Each department has a local government with a governor and assembly directly elected to four-year terms, and each municipality is headed by a mayor and council. There is a popularly elected local administrative board in each of the "corregimientos" or "comunas".
In addition to the capital, four other cities have been designated districts (in effect special municipalities), on the basis of special distinguishing features. These are Barranquilla, Cartagena, Santa Marta and Buenaventura. Some departments have local administrative subdivisions, where towns have a large concentration of population and municipalities are near each other (for example, in Antioquia and Cundinamarca). Where departments have a low population (for example Amazonas, Vaupés and Vichada), special administrative divisions are employed, such as "department "corregimientos"", which are a hybrid of a municipality and a "corregimiento". Economy. Historically an agrarian economy, Colombia urbanized rapidly in the 20th century, by the end of which just 15.8% of the workforce were employed in agriculture, generating just 6.6% of GDP; 20% of the workforce were employed in industry and 65% in services, responsible for 33% and 60% of GDP respectively. The country's economic production is dominated by its strong domestic demand. Consumption expenditure by households is the largest component of GDP.
Colombia's market economy grew steadily in the latter part of the 20th century, with gross domestic product (GDP) increasing at an average rate of over 4% per year between 1970 and 1998. The country suffered a recession in 1999 (the first full year of negative growth since the Great Depression), and the recovery was long and painful. However, growth reaching 7% in 2007, one of the highest in Latin America. According to International Monetary Fund estimates, in 2023, Colombia's GDP (PPP) was US$1 trillion, 32nd in the world and third in South America, after Brazil and Argentina. Total government expenditures account for 28% of the domestic economy. External debt equals 40% of gross domestic product. A strong fiscal climate was reaffirmed by a boost in bond ratings. Annual inflation closed 2017 at 4.09% YoY (vs. 5.75% YoY in 2016). The average national unemployment rate in 2017 was 9.4%, although the informality is the biggest problem facing the labour market (the income of formal workers climbed 24.8% in 5 years while labor incomes of informal workers rose only 9%). Colombia has free-trade zones (FTZ), such as Zona Franca del Pacifico, located in the Valle del Cauca, one of the most striking areas for foreign investment.
The financial sector has grown favorably due to good liquidity in the economy, the growth of credit and the positive performance of the Colombian economy. The Colombian Stock Exchange through the Latin American Integrated Market (MILA) offers a regional market to trade equities. Colombia is now one of only three economies with a perfect score on the strength of legal rights index, according to the World Bank. Colombia is rich in natural resources, and it is heavily dependent on energy and mining exports. Colombia's main exports include mineral fuels, oils, distillation products, fruit and other agricultural products, sugars and sugar confectionery, food products, plastics, precious stones, metals, forest products, chemical goods, pharmaceuticals, vehicles, electronic products, electrical equipment, perfumery and cosmetics, machinery, manufactured articles, textile and fabrics, clothing and footwear, glass and glassware, furniture, prefabricated buildings, military products, home and office material, construction equipment, software, among others. Principal trading partners are the United States, China, the European Union and some Latin American countries.
Non-traditional exports have boosted the growth of Colombian foreign sales as well as the diversification of destinations of export thanks to new free trade agreements. Recent economic growth has led to a considerable increase of new millionaires, including the new entrepreneurs, Colombians with a net worth exceeding US$1 billion. In 2017, however, the National Administrative Department of Statistics (DANE) reported that 26.9% of the population were living below the poverty line, of which 7.4% were in "extreme poverty". The multidimensional poverty rate stands at 17.0 percent of the population. The Government has also been developing a process of financial inclusion within the country's most vulnerable population. The contribution of tourism to GDP was US$5,880.3bn (2.0% of total GDP) in 2016. Tourism generated 556,135 jobs (2.5% of total employment) in 2016. Foreign tourist visits were predicted to have risen from 0.6 million in 2007 to 4 million in 2017. Agriculture and natural resources. In agriculture, Colombia is one of the five largest producers in the world of coffee, avocado and palm oil, and one of the 10 largest producers in the world of sugarcane, banana, pineapple and cocoa. The country also has considerable production of rice, potato and cassava. Although it is not the largest coffee producer in the world (Brazil claims that title), the country has been able to carry out, for decades, a global marketing campaign to add value to the country's product. Colombian palm oil production is one of the most sustainable on the planet, compared to the largest existing producers. Colombia is also among the 20 largest producers in the world of beef and chicken meat. Colombia is also the 2nd largest flower exporter in the world, after the Netherlands. Colombian agriculture emits 55% of Colombia's greenhouse gas emissions, mostly from deforestation, over-extensive cattle ranching, land grabbing, and illegal agriculture.
Colombia is an important exporter of coal and petroleum – in 2020, more than 40% of the country's exports were based on these two products. In 2018 it was the 5th largest coal exporter in the world. In 2019, Colombia was the 20th largest petroleum producer in the world, with 791 thousand barrels/day, exporting a good part of its production – the country was the 19th largest oil exporter in the world in 2020. In mining, Colombia is the world's largest producer of emerald, and in the production of gold, between 2006 and 2017, the country produced 15 tons per year until 2007, when its production increased significantly, beating the record of 66.1 tons extracted in 2012. In 2017, it extracted 52.2 tons. Currently, the country is among the 25 largest gold producers in the world. Energy and transportation. The electricity production in Colombia comes mainly from Renewable energy sources. 69.93% is obtained from the hydroelectric generation. Colombia's commitment to renewable energy was recognized in the 2014 "Global Green Economy Index (GGEI)", ranking among the top 10 nations in the world in terms of greening efficiency sectors.
Transportation in Colombia is regulated within the functions of the Ministry of Transport and entities such as the National Roads Institute (INVÍAS) responsible for the Highways in Colombia, the Aerocivil, responsible for civil aviation and airports, the National Infrastructure Agency, in charge of concessions through public–private partnerships, for the design, construction, maintenance, operation, and administration of the transport infrastructure, the General Maritime Directorate (Dimar) has the responsibility of coordinating maritime traffic control along with the Colombian Navy, among others, and under the supervision of the Superintendency of Ports and Transport. In 2021, Colombia had of roads, of which were paved. At the end of 2017, the country had around of duplicated highways. Rail transportation in Colombia is dedicated almost entirely to freight shipments and the railway network has a length of 1,700 km of potentially active rails. Colombia has 3,960 kilometers of gas pipelines, 4,900 kilometers of oil pipelines, and 2,990 kilometers of refined-products pipelines.
The Colombian government aimed to build 7,000 km of roads between 2016 and 2020, which would reduce travel times by an estimated 30 per cent, and transport costs by an estimated 20 per cent. A toll road concession programme will comprise 40 projects, and is part of a larger strategic goal to invest nearly $50 bn in transport infrastructure, including railway systems, making the Magdalena River navigable again, improving port facilities, and an expansion of El Dorado International Airport. Colombia is a middle-income country. Science and technology. Colombia has more than 3,950 research groups in science and technology. iNNpulsa, a government body that promotes entrepreneurship and innovation in the country, provides grants to startups, in addition to other services it and institutions provide. Colombia was ranked 61st in the Global Innovation Index in 2024. Co-working spaces have arisen to serve as communities for startups large and small. Organizations such as the Corporation for Biological Research (CIB) for the support of young people interested in scientific work has been successfully developed in Colombia. The International Center for Tropical Agriculture based in Colombia investigates the increasing challenge of global warming and food security.
Important inventions related to medicine have been made in Colombia, such as the first external artificial pacemaker with internal electrodes, invented by the electrical engineer Jorge Reynolds Pombo, an invention of great importance for those who suffer from heart failure. Also invented in Colombia were the microkeratome and keratomileusis technique, which form the fundamental basis of what now is known as LASIK (one of the most important techniques for the correction of refractive errors of vision) and the Hakim valve for the treatment of hydrocephalus. Colombia has begun to innovate in military technology for its army and other armies of the world; especially in the design and creation of personal ballistic protection products, military hardware, military robots, bombs, simulators and radar. Some leading Colombian scientists are Joseph M. Tohme, researcher recognized for his work on the genetic diversity of food, Manuel Elkin Patarroyo who is known for his groundbreaking work on synthetic vaccines for malaria, Francisco Lopera who discovered the "Paisa Mutation" or a type of early-onset Alzheimer's, Rodolfo Llinás known for his study of the intrinsic neurons properties and the theory of a syndrome that had changed the way of understanding the functioning of the brain, Jairo Quiroga Puello recognized for his studies on the characterization of synthetic substances which can be used to fight fungus, tumors, tuberculosis and even some viruses and Ángela Restrepo who established accurate diagnoses and treatments to combat the effects of a disease caused by "Paracoccidioides brasiliensis".
Demographics. With an estimated 50 million people in 2020, Colombia is the third-most populous country in Latin America, after Brazil and Mexico. At the beginning of the 20th century, Colombia's population was approximately 4 million. Since the early 1970s Colombia has experienced steady declines in its fertility, mortality, and population growth rates. The population growth rate for 2016 is estimated to be 0.9%. About 26.8% of the population were 15 years old or younger, 65.7% were between 15 and 64 years old, and 7.4% were over 65 years old. The proportion of older persons in the total population has begun to increase substantially. Colombia is projected to have a population of 55.3 million by 2050. Estimates for the population of the area that is now Colombia range between 2.5 and 12 million people in 1500; estimates between the extremes include figures of 6 and 7 million. With the Spanish conquest, the region's population had collapsed to around 1.2 million people in 1600, for an estimated decrease of 52–90%. By the end of the colonial period, it had declined further to around 800,000; it began rising in the early 19th century to around 1.4 million, where it would drop again in the Colombian War of Independence to between 1 and 1.2 million. The country's population did not recover to pre-conquest levels until the 1940s, nearly 450 years after its 16th-century peak.
The population is concentrated in the Andean highlands and along the Caribbean coast, also the population densities are generally higher in the Andean region. The nine eastern lowland departments, comprising about 54% of Colombia's area, have less than 6% of the population. Traditionally a rural society, movement to urban areas was very heavy in the mid-20th century, and Colombia is now one of the most urbanized countries in Latin America. The urban population increased from 31% of the total in 1938 to nearly 60% in 1973, and by 2014 the figure stood at 76%. The population of Bogotá alone has increased from just over 300,000 in 1938 to approximately 8 million today. In total seventy-two cities now have populations of 100,000 or more (2015). Colombia has the world's largest populations of internally displaced persons (IDPs), estimated to be up to 4.9 million people. The life expectancy was 74.8 years in 2015, and infant mortality was 13.1 per thousand in 2016. In 2015, 94.58% of adults and 98.66% of youth are literate and the government spends about 4.49% of its GDP on education.
Languages. Around 99.2% of Colombians speak Spanish, also called Castilian; 65 Amerindian languages, two Creole languages, the Romani language and Colombian Sign Language are also used in the country. English has official status in the archipelago of San Andrés, Providencia and Santa Catalina. Including Spanish, a total of 101 languages are listed for Colombia in the Ethnologue database. The specific number of spoken languages varies slightly since some authors consider as different languages what others consider to be varieties or dialects of the same language. Best estimates recorded 71 languages that are spoken in-country today – most of which belong to the Chibchan, Tucanoan, Bora–Witoto, Guajiboan, Arawakan, Cariban, Barbacoan, and Saliban language families. There are currently more than 850,000 speakers of native languages. Ethnic groups. Colombia is ethnically diverse, its people descending from the original Native inhabitants, Spanish conquistadors, Africans originally brought to the country as slaves, and 20th-century immigrants from Europe and the Middle East, all contributing to a diverse cultural heritage. The demographic distribution reflects a pattern that is influenced by colonial history. Whites live all throughout the country, mainly in urban centers and the burgeoning highland and coastal cities. The populations of the major cities also include mestizos. Mestizo "campesinos" (people living in rural areas) also live in the Andean highlands where some Spanish conquerors mixed with the women of Amerindian chiefdoms. Mestizos include artisans and small tradesmen that have played a major part in the urban expansion of recent decades. In a study by the American Journal of Physical Anthropology, Colombians have an average ancestry of 47% Amerindian DNA, 42% European DNA, and 11% African DNA.
The 2018 census reported that the "non-ethnic population", consisting of whites and mestizos (those of mixed European and Amerindian ancestry), constituted 87.6% of the national population. 6.7% is of African ancestry. Indigenous Amerindians constitute 4.3% of the population. Raizal people constitute 0.06% of the population. Palenquero people constitute 0.02% of the population. 0.01% of the population are Roma. A study by Latinobarómetro in 2023 estimates that 50.3% of the population are Mestizo, 26.4% are White, 9.5% are Indigenous, 9.0% are Black, 4.4% are Mulatto, and 0.4% are Asian, these estimates would equate to around 26 million people being Mestizo, 14 million being White, 5 million being Indigenous, 5 million being Black, 2 million being Mulatto, and 200k being Asian. The Federal Research Division estimated that the 86% of the population that did not consider themselves part of one of the ethnic groups indicated by the 2006 census, white Colombians are mainly of Spanish lineage, but there is also a large population of Middle East descent; in some areas there is a considerable input of German and Italian ancestry.
Many of the Indigenous peoples experienced a reduction in population during the Spanish rule and many others were absorbed into the mestizo population, but the remainder currently represents over eighty distinct cultures. Reserves ("resguardos") established for indigenous peoples occupy (27% of the country's total) and are inhabited by more than 800,000 people. Some of the largest indigenous groups are the Wayuu, the Paez, the Pastos, the Emberá and the Zenú. The departments of La Guajira, Cauca, Nariño, Córdoba and Sucre have the largest indigenous populations. The Organización Nacional Indígena de Colombia (ONIC), founded at the first National Indigenous Congress in 1982, is an organization representing the indigenous peoples of Colombia. In 1991, Colombia signed and ratified the current international law concerning indigenous peoples, Indigenous and Tribal Peoples Convention, 1989. Sub-Saharan Africans were brought as slaves, mostly to the coastal lowlands, beginning early in the 16th century and continuing into the 19th century. Large Afro-Colombian communities are found today on the Pacific Coast. Numerous Jamaicans migrated mainly to the islands of San Andres and Providencia. A number of other Europeans and North Americans migrated to the country in the late 19th and early 20th centuries, including people from the former USSR during and after the Second World War.
Many immigrant communities have settled on the Caribbean coast, in particular recent immigrants from the Middle East and Europe. Barranquilla (the largest city of the Colombian Caribbean) and other Caribbean cities have the largest populations of Lebanese, Palestinian, and other Levantines. There are also important communities of Romanis and Jews. There is a major migration trend of Venezuelans, due to the political and economic situation in Venezuela. In August 2019, Colombia offered citizenship to more than 24,000 children of Venezuelan refugees who were born in Colombia. Religion. The National Administrative Department of Statistics (DANE) does not collect religious statistics, and accurate reports are difficult to obtain. However, based on various studies and a survey, about 90% of the population adheres to Christianity, the majority of which (70.9%–79%) are Roman Catholic, while a significant minority (16.7%) adhere to Protestantism (primarily Evangelicalism). Some 4.7% of the population is atheist or agnostic, while 3.5% claim to believe in God but do not follow a specific religion. 1.8% of Colombians adhere to Jehovah's Witnesses and Adventism and less than 1% adhere to other religions, such as the Baháʼí Faith, Islam, Judaism, Buddhism, Mormonism, Hinduism, Indigenous religions, Hare Krishna movement, Rastafari movement, Eastern Orthodox Church, and spiritual studies. The remaining people either did not respond or replied that they did not know. In addition to the above statistics, 35.9% of Colombians reported that they did not practice their faith actively. 1,519,562 people in Colombia, or around 3% of the population reported following an Indigenous religion.
While Colombia remains a mostly Roman Catholic country by baptism numbers, the 1991 Colombian constitution guarantees freedom of religion and all religious faiths and churches are equally free before the law. Health. The overall life expectancy in Colombia at birth is 79.3 years (76.7 years for males and 81.9 years for females). Healthcare reforms have led to massive improvements in the healthcare systems of the country, with health standards in Colombia improving very much since the 1980s. The new system has widened population coverage by the social and health security system from 21% (pre-1993) to 96% in 2012. In 2017, the government declared a cancer research and treatment center as a Project of National Strategic Interest. A 2016 study conducted by "América Economía" magazine ranked 21 Colombian health care institutions among the top 44 in Latin America, amounting to 48 percent of the total. In 2022, 26 Colombian hospitals were among the 61 best in Latin America (42% total). Also in 2023, two Colombian hospitals were among the top 75 of the world.
Education. The educational experience of many Colombian children begins with attendance at a preschool academy until age five ("Educación preescolar"). Basic education ("Educación básica") is compulsory by law. It has two stages: Primary basic education ("Educación básica primaria") which goes from first to fifth grade – children from six to ten years old, and Secondary basic education ("Educación básica secundaria"), which goes from sixth to ninth grade. Basic education is followed by Middle vocational education ("Educación media vocacional") that comprises the tenth and eleventh grades. It may have different vocational training modalities or specialties (academic, technical, business, and so on.) according to the curriculum adopted by each school. After the successful completion of all the basic and middle education years, a high-school diploma is awarded. The high-school graduate is known as a "bachiller", because secondary basic school and middle education are traditionally considered together as a unit called "bachillerato" (sixth to eleventh grade). Students in their final year of middle education take the ICFES test (now renamed Saber 11) to gain access to higher education ("Educación superior"). This higher education includes undergraduate professional studies, technical, technological and intermediate professional education, and post-graduate studies. Technical professional institutions of Higher Education are also opened to students holder of a qualification in Arts and Business. This qualification is usually awarded by the SENA after a two years curriculum.
"Bachilleres" (high-school graduates) may enter into a professional undergraduate career program offered by a university; these programs last up to five years (or less for technical, technological and intermediate professional education, and post-graduate studies), even as much to six to seven years for some careers, such as medicine. In Colombia, there is not an institution such as college; students go directly into a career program at a university or any other educational institution to obtain a professional, technical or technological title. Once graduated from the university, people are granted a (professional, technical or technological) diploma and licensed (if required) to practice the career they have chosen. For some professional career programs, students are required to take the Saber-Pro test, in their final year of undergraduate academic education. Public spending on education as a proportion of gross domestic product in 2015 was 4.49%. This represented 15.05% of total government expenditure. The primary and secondary gross enrolment ratios stood at 113.56% and 98.09% respectively. School-life expectancy was 14.42 years. A total of 94.58% of the population aged 15 and older were recorded as literate, including 98.66% of those aged 15–24.
Urbanization. Colombia is a highly urbanized country with 77.1% of the population living in urban areas. The largest cities in the country are Bogotá, with 7,387,400 inhabitants, Medellín, with 2,382,399 inhabitants, Cali, with 2,172,527 inhabitants, and Barranquilla, with 1,205,284 inhabitants. Culture. Colombia lies at the crossroads of Latin America and the broader American continent, and as such has been hit by a wide range of cultural influences. Native American, Spanish and other European, African, American, Caribbean, and Middle Eastern influences, as well as other Latin American cultural influences, are all present in Colombia's modern culture. Urban migration, industrialization, globalization, and other political, social and economic changes have also left an impression. Many national symbols, both objects and themes, have arisen from Colombia's diverse cultural traditions and aim to represent what Colombia, and the Colombian people, have in common. Cultural expressions in Colombia are promoted by the government through the Ministry of Culture.
Literature. Colombian literature dates back to pre-Columbian era; a notable example of the period is the epic poem known as the "Legend of Yurupary". In Spanish colonial times, notable writers include Juan de Castellanos ("Elegías de varones ilustres de Indias"), Hernando Domínguez Camargo and his epic poem to San Ignacio de Loyola, Pedro Simón and Juan Rodríguez Freyle. Post-independence literature linked to Romanticism highlighted Antonio Nariño, José Fernández Madrid, Camilo Torres Tenorio and Francisco Antonio Zea. In the second half of the nineteenth century and early twentieth century the literary genre known as "costumbrismo" became popular; great writers of this period were Tomás Carrasquilla, Jorge Isaacs and Rafael Pombo (the latter of whom wrote notable works of children's literature). Within that period, authors such as José Asunción Silva, José Eustasio Rivera, León de Greiff, Porfirio Barba-Jacob and José María Vargas Vila developed the modernist movement. In 1872, Colombia established the Colombian Academy of Language, the first Spanish language academy in the Americas. Candelario Obeso wrote the groundbreaking "Cantos Populares de mi Tierra" (1877), the first book of poetry by an Afro-Colombian author.
Between 1939 and 1940 seven books of poetry were published under the name "Stone and Sky" in the city of Bogotá that significantly influenced the country; they were edited by the poet Jorge Rojas. In the following decade, Gonzalo Arango founded the movement of "nothingness" in response to the violence of the time; he was influenced by nihilism, existentialism, and the thought of another great Colombian writer: Fernando González Ochoa. During the boom in Latin American literature, successful writers emerged, led by Nobel laureate Gabriel García Márquez and his magnum opus, "One Hundred Years of Solitude", Eduardo Caballero Calderón, Manuel Mejía Vallejo, and Álvaro Mutis, a writer who was awarded the Cervantes Prize and the Prince of Asturias Award for Letters. Visual arts. Colombian art has over 3,000 years of history. Colombian artists have captured the country's changing political and cultural backdrop using a range of styles and mediums. There is archeological evidence of ceramics being produced earlier in Colombia than anywhere else in the Americas, dating as early as 3,000 BCE.
The earliest examples of gold craftsmanship have been attributed to the Tumaco people of the Pacific coast and date to around 325 BCE. Roughly between 200 BCE and 800 CE, the San Agustín culture, masters of stonecutting, entered its "classical period". They erected raised ceremonial centers, sarcophagi, and large stone monoliths depicting anthropomorphic and zoomorphic forms out of stone. Colombian art has followed the trends of the time, so during the 16th to 18th centuries, Spanish Catholicism had a huge influence on Colombian art, and the popular baroque style was replaced with rococo when the Bourbons ascended to the Spanish crown. During this era, in the Spanish colony, the most important Neogranadine (Colombian) painters were Gregorio Vásquez de Arce y Ceballos, Gaspar de Figueroa, Baltasar Vargas de Figueroa, Baltasar de Figueroa (the Elder), Antonio Acero de la Cruz and Joaquín Gutiérrez, of which their works are preserved. Also important was Alonso de Narváez who, although born in the Province of Seville, spent most of his life in colonial Colombia, also the Italian Angelino Medoro, lived in Colombia and Peru, and left works of art preserved in several churches in Tunja city.
During the mid-19th century, one of the most remarkable painters was Ramón Torres Méndez, who produced a series of good quality paintings depicting the people and their customs of different Colombian regions. Also noteworthy in the 19th century were Andrés de Santa María, Pedro José Figueroa, Epifanio Garay, Mercedes Delgado Mallarino, José María Espinosa, Ricardo Acevedo Bernal, between many others. More recently, Colombian artists Pedro Nel Gómez and Santiago Martínez Delgado started the Colombian Murial Movement in the 1940s, featuring the neoclassical features of Art Deco. Since the 1950s, the Colombian art started to have a distinctive point of view, reinventing traditional elements under the concepts of the 20th century. Examples of this are the Greiff portraits by Ignacio Gómez Jaramillo, showing what the Colombian art could do with the new techniques applied to typical Colombian themes. Carlos Correa, with his paradigmatic "Naturaleza muerta en silencio" (silent dead nature), combines geometrical abstraction and cubism. Alejandro Obregón is often considered as the father of modern Colombian painting, and one of the most influential artist in this period, due to his originality, the painting of Colombian landscapes with symbolic and expressionist use of animals, (specially the Andean condor). Fernando Botero, Omar Rayo, Enrique Grau, Édgar Negret, David Manzur, Rodrigo Arenas Betancourt, Oscar Murillo, Doris Salcedo and Oscar Muñoz are some of the Colombian artists featured at the international level.
The Colombian sculpture from the sixteenth to 18th centuries was mostly devoted to religious depictions of ecclesiastic art, strongly influenced by the Spanish schools of sacred sculpture. During the early period of the Colombian republic, the national artists were focused in the production of sculptural portraits of politicians and public figures, in a plain neoclassicist trend. During the 20th century, the Colombian sculpture began to develop a bold and innovative work with the aim of reaching a better understanding of national sensitivity. Colombian photography was marked by the arrival of the daguerreotype. Jean-Baptiste Louis Gros was who brought the daguerreotype process to Colombia in 1841. The Piloto public library has Latin America's largest archive of negatives, containing 1.7 million antique photographs covering Colombia 1848 until 2005. The Colombian press has promoted the work of the cartoonists. In recent decades, fanzines, internet and independent publishers have been fundamental to the growth of the comic in Colombia.
Architecture. Throughout the times, there have been a variety of architectural styles, from those of indigenous peoples to contemporary ones, passing through colonial (military and religious), Republican, transition and modern styles. Ancient habitation areas, longhouses, crop terraces, roads as the Inca road system, cemeteries, hypogeums and necropolises are all part of the architectural heritage of indigenous peoples. Some prominent indigenous structures are the preceramic and ceramic archaeological site of Tequendama, Tierradentro (a park that contains the largest concentration of pre-Columbian monumental shaft tombs with side chambers), the largest collection of religious monuments and megalithic sculptures in South America, located in San Agustín, Huila, Lost city (an archaeological site with a series of terraces carved into the mountainside, a net of tiled roads, and several circular plazas), and the large villages mainly built with stone, wood, cane, and mud. Architecture during the period of conquest and colonization is mainly derived of adapting European styles to local conditions, and Spanish influence, especially Andalusian and Extremaduran, can be easily seen. When Europeans founded cities two things were making simultaneously: the dimensioning of geometrical space (town square, street), and the location of a tangible point of orientation. The construction of forts was common throughout the Caribbean and in some cities of the interior, because of the dangers posed to Spanish colonial settlements from English, French and Dutch pirates and hostile indigenous groups. Churches, chapels, schools, and hospitals belonging to religious orders have a great urban influence. Baroque architecture is used in military buildings and public spaces. Marcelino Arroyo, Francisco José de Caldas and Domingo de Petrés were great representatives of neo-classical architecture.
The National Capitol is a great representative of romanticism. Wood was extensively used in doors, windows, railings, and ceilings during the colonization of Antioquia. The Caribbean architecture acquires a strong Arabic influence. The Teatro Colón in Bogotá is a lavish example of architecture from the 19th century. The quintas houses with innovations in the volumetric conception are some of the best examples of the Republican architecture; the Republican action in the city focused on the design of three types of spaces: parks with forests, small urban parks and avenues and the Gothic style was most commonly used for the design of churches. Deco style, modern neoclassicism, eclecticism folklorist and art deco ornamental resources significantly influenced the architecture of Colombia, especially during the transition period. Modernism contributed with new construction technologies and new materials (steel, reinforced concrete, glass and synthetic materials) and the topology architecture and lightened slabs system also have a great influence. The most influential architects of the modern movement were Rogelio Salmona and Fernando Martínez Sanabria.
The contemporary architecture of Colombia is designed to give greater importance to the materials, this architecture takes into account the specific natural and artificial geographies and is also an architecture that appeals to the senses. The conservation of the architectural and urban heritage of Colombia has been promoted in recent years. Music. Colombia has a vibrant collage of talent that touches a full spectrum of rhythms. It is known as the land of a thousand rhythms, at around 1,024 folk rhythms. Musicians, composers, music producers and singers from Colombia are recognized internationally such as Shakira, Juanes, Carlos Vives and others. Colombian music blends European-influenced guitar and song structure with large gaita flutes and percussion instruments from the indigenous population, while its percussion structure and dance forms come from Africa. Colombia has a diverse and dynamic musical environment. Guillermo Uribe Holguín, an important cultural figure in the National Symphony Orchestra of Colombia, Luis Antonio Calvo and Blas Emilio Atehortúa are some of the greatest exponents of the art music. The Bogotá Philharmonic Orchestra is one of the most active orchestras in Colombia.
Caribbean music has many vibrant rhythms, such as cumbia (it is played by the maracas, the drums, the gaitas and guacharaca), porro (it is a monotonous but joyful rhythm), mapalé (with its fast rhythm and constant clapping) and the "vallenato", which originated in the northern part of the Caribbean coast (the rhythm is mainly played by the caja, the guacharaca, and accordion). The music from the Pacific coast, such as the currulao, is characterized by its strong use of drums (instruments such as the native marimba, the conunos, the bass drum, the side drum, and the cuatro guasas or tubular rattle). An important rhythm of the south region of the Pacific coast is the contradanza (it is used in dance shows due to the striking colours of the costumes). Marimba music, traditional chants and dances from the Colombia South Pacific region are on UNESCO's Representative List of the Intangible Cultural Heritage of Humanity. Important musical rhythms of the Andean Region are the danza (dance of Andean folklore arising from the transformation of the European contredance), the bambuco (it is played with guitar, tiple and mandolin, the rhythm is danced by couples), the pasillo (a rhythm inspired by the Austrian waltz and the Colombian "danza", the lyrics have been composed by well-known poets), the guabina (the tiple, the bandola and the requinto are the basic instruments), the sanjuanero (it originated in Tolima and Huila Departments, the rhythm is joyful and fast). Apart from these traditional rhythms, salsa music has spread throughout the country, and the city of Cali is considered by many salsa singers to be 'The New Salsa Capital of the World'.
The instruments that distinguish the music of the Eastern Plains are the harp, the cuatro (a type of four-stringed guitar) and maracas. Important rhythms of this region are the joropo (a fast rhythm and there is also tapping as a result of its flamenco ancestry) and the galeron (it is heard a lot while cowboys are working). The music of the Amazon region is strongly influenced by the indigenous religious practices. Some of the musical instruments used are the manguaré (a musical instrument of ceremonial type, consisting of a pair of large cylindrical drums), the quena (melodic instrument), the rondador, the congas, bells, and different types of flutes. The music of the Archipelago of San Andrés, Providencia and Santa Catalina is usually accompanied by a mandolin, a tub-bass, a jawbone, a guitar and maracas. Some popular archipelago rhythms are the Schottische, the Calypso, the Polka and the Mento. Popular culture. Theater was introduced in Colombia during the Spanish colonization in 1550 through zarzuela companies. Colombian theater is supported by the Ministry of Culture and a number of private and state owned organizations. The Ibero-American Theater Festival of Bogotá is the cultural event of the highest importance in Colombia and one of the biggest theater festivals in the world. Other important theater events are: The Festival of Puppet The Fanfare (Medellín), The Manizales Theater Festival, The Caribbean Theatre Festival (Santa Marta) and The Art Festival of Popular Culture "Cultural Invasion" (Bogotá).
Although the Colombian cinema is young as an industry, more recently the film industry was growing with support from the Film Act passed in 2003. Many film festivals take place in Colombia, but the two most important are the Cartagena Film Festival, which is the oldest film festival in Latin America, and the Bogotá Film Festival. Some important national circulation newspapers are "El Tiempo" and "El Espectador". Television in Colombia has two privately owned TV networks and three state-owned TV networks with national coverage, as well as six regional TV networks and dozens of local TV stations. Private channels, RCN and Caracol are the highest-rated. The regional channels and regional newspapers cover a department or more and its content is made in these particular areas. Colombia has three major national radio networks: Radiodifusora Nacional de Colombia, a state-run national radio; Caracol Radio and RCN Radio, privately owned networks with hundreds of affiliates. There are other national networks, including Cadena Super, Todelar, and Colmundo. Many hundreds of radio stations are registered with the Ministry of Information Technologies and Communications.
Cuisine. Colombia's varied cuisine is influenced by its diverse fauna and flora as well as the cultural traditions of the ethnic groups. Colombian dishes and ingredients vary widely by region. Some of the most common ingredients are: cereals such as rice and maize; tubers such as potato and cassava; assorted legumes; meats, including beef, chicken, pork and goat; fish; and seafood. Colombia cuisine also features a variety of tropical fruits such as cape gooseberry, feijoa, arazá, dragon fruit, mangostino, granadilla, papaya, guava, mora (blackberry), lulo, soursop and passionfruit. Colombia is one of the world's largest consumers of fruit juices. Among the most representative appetizers and soups are patacones (fried green plantains), sancocho de gallina (chicken soup with root vegetables) and ajiaco (potato and corn soup). Representative snacks and breads are pandebono, arepas (corn cakes), aborrajados (fried sweet plantains with cheese), torta de choclo, empanadas and almojábanas. Representative main courses are bandeja paisa, lechona tolimense, mamona, tamales and fish dishes (such as arroz de lisa), especially in coastal regions where kibbeh, suero, costeño cheese and carimañolas are also eaten. Representative side dishes are papas chorreadas (potatoes with cheese), remolachas rellenas con huevo duro (beets stuffed with hard-boiled egg) and arroz con coco (coconut rice). Organic food is a current trend in big cities, although in general across the country the fruits and veggies are very natural and fresh.
Representative desserts are buñuelos, natillas, Maria Luisa cake, bocadillo made of guayaba (guava jelly), cocadas (coconut balls), casquitos de guayaba (candied guava peels), torta de natas, obleas, flan de mango, roscón, milhoja, manjar blanco, dulce de feijoa, dulce de papayuela, torta de mojicón, and esponjado de curuba. Typical sauces (salsas) are hogao (tomato and onion sauce) and Colombian-style ají. Some representative beverages are coffee (Tinto), champús, cholado, lulada, avena colombiana, sugarcane juice, aguapanela, aguardiente, hot chocolate and fresh fruit juices (often made with water or milk). Sports. Tejo is Colombia's national sport and is a team sport that involves launching projectiles to hit a target. But of all sports in Colombia, football is the most popular. Colombia was the champion of the 2001 Copa América, in which they set a new record of being undefeated, conceding no goals and winning each match. Colombia has been awarded "mover of the year" twice. Colombia is a hub for roller skaters. The national team is a perennial powerhouse at the World Roller Speed Skating Championships. Colombia has traditionally been very good in cycling and a large number of Colombian cyclists have triumphed in major competitions of cycling.
Baseball is popular in cities like Cartagena and Barranquilla. Of those cities have come good players like: Orlando Cabrera, Édgar Rentería, who was champion of the World Series in 1997 and 2010 and others who have played in Major League Baseball. Colombia was world amateur champion in 1947 and 1965. Boxing is one of the sports that has produced more world champions for Colombia. Motorsports also occupies an important place in the sporting preferences of Colombians; Juan Pablo Montoya is a race car driver known for winning 7 Formula One events. Colombia also has excelled in sports such as BMX, judo, shooting sport, taekwondo, wrestling, high diving and athletics, also has a long tradition in weightlifting and bowling.
Citizen Kane Citizen Kane is a 1941 American drama film directed by, produced by and starring Orson Welles and co-written by Welles and Herman J. Mankiewicz. It was Welles's first feature film. The quasi-biographical film examines the life and legacy of Charles Foster Kane, played by Welles, a composite character based on American media barons William Randolph Hearst and Joseph Pulitzer, Chicago tycoons Samuel Insull and Harold McCormick, as well as aspects of the screenwriters' own lives. After the Broadway success of Welles's Mercury Theatre and the controversial 1938 radio broadcast "The War of the Worlds" on "The Mercury Theatre on the Air", Welles was courted by Hollywood. He signed a contract with RKO Pictures in 1939. Although it was unusual for an untried director, he was given freedom to develop his own story, to use his own cast and crew, and to have final cut privilege. Following two abortive attempts to get a project off the ground, he wrote the screenplay for "Citizen Kane" with Herman J. Mankiewicz. Principal photography took place in 1940, the same year its innovative trailer was shown, and the film was released in 1941.
Upon its release, Hearst prohibited any mention of the film in his newspapers. Although it was a critical success, "Citizen Kane" failed to recoup its costs at the box office. The film faded from view after its release, but it returned to public attention when it was praised by French critics such as André Bazin and re-released in 1956. In 1958, the film was voted number nine on the prestigious Brussels 12 list at the 1958 World Expo. "Citizen Kane" is frequently cited as the greatest film ever made. For 40 years (five decennial polls: 1962, 1972, 1982, 1992 and 2002), it stood at number one in the British Film Institute's "Sight & Sound" decennial poll of critics, and it topped the American Film Institute's 100 Years ... 100 Movies list in 1998, as well as its 2007 update. The Library of Congress selected "Citizen Kane" as an inductee of the 1989 inaugural group of 25 films for preservation in the United States National Film Registry for being "culturally, historically, or aesthetically significant". The film was nominated for Academy Awards in nine categories and it won for Best Writing (Original Screenplay) by Mankiewicz and Welles. "Citizen Kane" is praised for Gregg Toland's cinematography, Robert Wise's editing, Bernard Herrmann's score and its narrative structure, all of which have been considered innovative and precedent-setting.
Plot. In a mansion called Xanadu, part of a vast palatial estate in Florida, the elderly Charles Foster Kane is on his deathbed. Holding a snow globe, he utters his last word, "Rosebud", and dies. A newsreel obituary tells the life story of Kane, an enormously wealthy newspaper publisher and industry magnate. Kane's death becomes sensational news around the world, and the newsreel's producer tasks reporter Jerry Thompson with discovering the meaning of "Rosebud". Thompson sets out to interview Kane's friends and associates. He tries to approach Kane's second wife, Susan Alexander Kane, now an alcoholic nightclub owner, but she refuses to talk to him. Thompson goes to the private archive of the late banker Walter Parks Thatcher. Through Thatcher's written memoirs, Thompson learns about Kane's rise from a Colorado boarding house and the decline of his fortune. In 1871, gold was discovered through a mining deed belonging to Kane's mother, Mary Kane. She hired Thatcher to establish a trust that would provide for Kane's education and assume guardianship of him. While the parents and Thatcher discussed arrangements inside the boarding house, the young Kane played happily with a sled in the snow outside. When Kane's parents introduced him to Thatcher and told him he would live with Thatcher, the boy struck Thatcher with his sled and attempted to run away.
By the time Kane gained control of his trust at the age of 25, the mine's productivity and Thatcher's prudent investing had made Kane one of the richest men in the world. Kane took control of the "New York Inquirer" newspaper and embarked on a career of yellow journalism, publishing scandalous articles that attacked Thatcher's (and his own) business interests. Kane sold his newspaper empire to Thatcher after the 1929 stock market crash left him short of cash. Thompson interviews Kane's personal business manager, Mr. Bernstein. Bernstein recalls that Kane hired the best journalists available to build the "Inquirer"s circulation. Kane rose to power by successfully manipulating public opinion regarding the Spanish–American War and marrying Emily Norton, the niece of the President of the United States. Thompson interviews Kane's estranged best friend, Jedediah Leland, in a retirement home. Leland says that Kane's marriage to Emily disintegrated over the years, and he began an affair with amateur singer Susan Alexander while running for Governor of New York. Both his wife and his political opponent discovered the affair, and the public scandal ended his political career. Kane married Susan and forced her into a humiliating career as an opera singer (for which she had neither the talent nor the ambition). Kane arranged for a large opera house to be built in Chicago for Susan to perform in. After Leland began to write a negative review of Susan's disastrous opera debut, Kane fired him but finished the negative review and printed it. Susan protested that she never wanted the opera career anyway, but Kane forced her to continue the season.
Susan consents to an interview with Thompson and describes the aftermath of her opera career. She attempted suicide, and Kane finally allowed her to abandon singing. After many unhappy years living at Xanadu with Kane, the two had an argument that culminated in Kane slapping Susan. Susan decided to leave Kane. Kane's butler Raymond recounts that, after Susan moved out of Xanadu, Kane began violently destroying the contents of her former bedroom. When Kane discovered a snow globe, he calmed down and tearfully said "Rosebud". Thompson concludes that he cannot solve the mystery and that the meaning of Kane's last word will remain unknown. At Xanadu, Kane's belongings are cataloged or discarded by the mansion's staff. They find a sled, the one on which eight-year-old Kane was playing on the day that he was taken from his home in Colorado, and throw it into a furnace with other items. Unknown to the staff, the sled's trade name, printed on top, becomes visible through the flames: "Rosebud". Cast. The beginning of the film's ending credits states that "Most of the principal actors in "Citizen Kane" are new to motion pictures. The Mercury Theatre is proud to introduce them." The cast is then listed in the following order, with Orson Welles' credit for playing Charles Foster Kane appearing last:
Additionally, Charles Bennett appears as the entertainer at the head of the chorus line in the "Inquirer" party sequence, and cinematographer Gregg Toland makes a cameo appearance as an interviewer depicted in part of the "News on the March" newsreel. Actor Alan Ladd, still unknown at that time, makes a small appearance as a reporter smoking a pipe at the end of the film. Production. Development. Hollywood had shown interest in Welles as early as 1936. He turned down three scripts sent to him by Warner Bros. In 1937, he declined offers from David O. Selznick, who asked him to head his film company's story department, and William Wyler, who wanted him for a supporting role in "Wuthering Heights". "Although the possibility of making huge amounts of money in Hollywood greatly attracted him," wrote biographer Frank Brady, "he was still totally, hopelessly, insanely in love with the theater, and it is there that he had every intention of remaining to make his mark." Following the 1938 "The War of the Worlds" broadcast of his CBS radio series "The Mercury Theatre on the Air", Welles was lured to Hollywood with a remarkable contract. RKO Pictures studio head George J. Schaefer wanted to work with Welles after the notorious broadcast, believing that Welles had a gift for attracting mass attention. RKO was also uncharacteristically profitable and was entering into a series of independent production contracts that would add more artistically prestigious films to its roster. Throughout the spring and early summer of 1939, Schaefer constantly tried to lure the reluctant Welles to Hollywood. Welles was in financial trouble after failure of his plays "Five Kings" and "The Green Goddess". At first he simply wanted to spend three months in Hollywood and earn enough money to pay his debts and fund his next theatrical season. Welles first arrived on July 20, 1939, and on his first tour, he called the movie studio "the greatest electric train set a boy ever had".
Welles signed his contract with RKO on August 21, which stipulated that Welles would act in, direct, produce and write two films. Mercury would get $100,000 for the first film by January 1, 1940, plus 20% of profits after RKO recouped $500,000, and $125,000 for a second film by January 1, 1941, plus 20% of profits after RKO recouped $500,000. The most controversial aspect of the contract was granting Welles complete artistic control of the two films so long as RKO approved both projects' stories and the budget did not exceed $500,000. RKO executives would not be allowed to see any footage until Welles chose to show it to them, and no cuts could be made to either film without Welles's approval. Welles was allowed to develop the story without interference, select his own cast and crew, and have the right of final cut. Granting the final cut privilege was unprecedented for a studio because it placed artistic considerations over financial investment. The contract was deeply resented in the film industry, and the Hollywood press took every opportunity to mock RKO and Welles. Schaefer remained a great supporter and saw the unprecedented contract as good publicity. Film scholar Robert L. Carringer wrote: "The simple fact seems to be that Schaefer believed Welles was going to pull off something really big almost as much as Welles did himself."
Welles spent the first five months of his RKO contract trying to get his first project going, without success. "They are laying bets over on the RKO lot that the Orson Welles deal will end up without Orson ever doing a picture there," wrote "The Hollywood Reporter". It was agreed that Welles would film "Heart of Darkness", previously adapted for "The Mercury Theatre on the Air", which would be presented entirely through a first-person camera. After elaborate pre-production and a day of test shooting with a hand-held camera—unheard of at the time—the project never reached production because Welles was unable to trim $50,000 from its budget. Schaefer told Welles that the $500,000 budget could not be exceeded; as war loomed, revenue was declining sharply in Europe by the fall of 1939. He then started work on the idea that became "Citizen Kane". Knowing the script would take time to prepare, Welles suggested to RKO that while that was being done—"so the year wouldn't be lost"—he make a humorous political thriller. Welles proposed "The Smiler with a Knife", from a novel by Cecil Day-Lewis. When that project stalled in December 1939, Welles began brainstorming other story ideas with screenwriter Herman J. Mankiewicz, who had been writing Mercury radio scripts. "Arguing, inventing, discarding, these two powerful, headstrong, dazzlingly articulate personalities thrashed toward "Kane"", wrote biographer Richard Meryman.
Screenplay. One of the long-standing controversies about "Citizen Kane" has been the authorship of the screenplay. Welles conceived the project with screenwriter Herman J. Mankiewicz, who was writing radio plays for Welles's CBS Radio series, "The Campbell Playhouse". Mankiewicz based the original outline on the life of William Randolph Hearst, whom he knew socially and came to hate after being exiled from Hearst's circle. In February 1940 Welles supplied Mankiewicz with 300 pages of notes and put him under contract to write the first draft screenplay under the supervision of John Houseman, Welles's former partner in the Mercury Theatre. Welles later explained, "I left him on his own finally, because we'd started to waste too much time haggling. So, after mutual agreements on storyline and character, Mank went off with Houseman and did his version, while I stayed in Hollywood and wrote mine." Taking these drafts, Welles drastically condensed and rearranged them, then added scenes of his own. The industry accused Welles of underplaying Mankiewicz's contribution to the script, but Welles countered the attacks by saying, "At the end, naturally, I was the one making the picture, after all—who had to make the decisions. I used what I wanted of Mank's and, rightly or wrongly, kept what I liked of my own."
The contract stated that Mankiewicz was to receive no credit for his work, as he was hired as a script doctor. Before he signed the contract Mankiewicz was advised by his agents that all credit for his work belonged to Welles and the Mercury Theatre, the "author and creator". As the film neared release, however, Mankiewicz began wanting a writing credit and even threatened to take out full-page advertisements in trade papers and to get his friend Ben Hecht to write an exposé for "The Saturday Evening Post". Mankiewicz also threatened to go to the Screen Writers Guild and claim full credit for writing the entire script by himself. After lodging a protest with the Screen Writers Guild, Mankiewicz withdrew it, then vacillated. The question was resolved in January 1941 when the studio, RKO Pictures, awarded Mankiewicz credit. The guild credit form listed Welles first, Mankiewicz second. Welles's assistant Richard Wilson said that the person who circled Mankiewicz's name in pencil, then drew an arrow that put it in first place, was Welles. The official credit reads, "Screenplay by Herman J. Mankiewicz and Orson Welles". Mankiewicz's rancor toward Welles grew over the remaining twelve years of his life.
Questions over the authorship of the "Citizen Kane" screenplay were revived in 1971 by influential film critic Pauline Kael, whose controversial 50,000-word essay "Raising Kane" was commissioned as an introduction to the shooting script in "The Citizen Kane Book", published in October 1971. The book-length essay first appeared in February 1971, in two consecutive issues of "The New Yorker" magazine. In the ensuing controversy, Welles was defended by colleagues, critics, biographers and scholars, but his reputation was damaged by its charges. The essay's thesis was later questioned and some of Kael's findings were also contested in later years. Questions of authorship continued to come into sharper focus with Carringer's 1978 thoroughly researched essay, "The Scripts of "Citizen Kane"". Carringer studied the collection of script records—"almost a day-to-day record of the history of the scripting"—that was then still intact at RKO. He reviewed all seven drafts and concluded that "the full evidence reveals that Welles's contribution to the "Citizen Kane" script was not only substantial but definitive."
Casting. "Citizen Kane" was a rare film in that its principal roles were played by actors new to motion pictures. Ten were billed as Mercury Actors, members of the skilled repertory company assembled by Welles for the stage and radio performances of the Mercury Theatre, an independent theater company he founded with Houseman in 1937. "He loved to use the Mercury players," wrote biographer Charles Higham, "and consequently he launched several of them on movie careers." The film represents the feature film debuts of William Alland, Ray Collins, Joseph Cotten, Agnes Moorehead, Erskine Sanford, Everett Sloane, Paul Stewart and Welles himself. Despite never having appeared in feature films, some of the cast members were already well known to the public. Cotten had recently become a Broadway star in the hit play "The Philadelphia Story" with Katharine Hepburn and Sloane was well known for his role on the radio show "The Goldbergs". Mercury actor George Coulouris was a star of the stage in New York and London. Not all of the cast came from the Mercury Players. Welles cast Dorothy Comingore, an actress who played supporting parts in films since 1938 using the name "Linda Winters", as Susan Alexander Kane. A discovery of Charlie Chaplin, Comingore was recommended to Welles by Chaplin, who then met Comingore at a party in Los Angeles and immediately cast her.
Welles had met stage actress Ruth Warrick while visiting New York on a break from Hollywood and remembered her as a good fit for Emily Norton Kane, later saying that she looked the part. Warrick told Carringer that she was struck by the extraordinary resemblance between herself and Welles's mother when she saw a photograph of Beatrice Ives Welles. She characterized her own personal relationship with Welles as motherly. "He trained us for films at the same time that he was training himself," recalled Agnes Moorehead. "Orson believed in good acting, and he realized that rehearsals were needed to get the most from his actors. That was something new in Hollywood: nobody seemed interested in bringing in a group to rehearse before scenes were shot. But Orson knew it was necessary, and we rehearsed every sequence before it was shot." When "The March of Time" narrator Westbrook Van Voorhis asked for $25,000 to narrate the "News on the March" sequence, Alland demonstrated his ability to imitate Van Voorhis, and Welles cast him.
Welles later said that casting character actor Gino Corrado in the small part of the waiter at the El Rancho broke his heart. Corrado had appeared in many Hollywood films, often as a waiter, and Welles wanted all of the actors to be new to films. Other uncredited roles went to Thomas A. Curran as Teddy Roosevelt in the faux newsreel; Richard Baer as Hillman, a man at Madison Square Garden, and a man in the "News on the March" screening room; and Alan Ladd, Arthur O'Connell and Louise Currie as reporters at Xanadu. Filming. Production advisor Miriam Geiger quickly compiled a handmade film textbook for Welles, a practical reference book of film techniques that he studied carefully. He then taught himself filmmaking by matching its visual vocabulary to "The Cabinet of Dr. Caligari", which he ordered from the Museum of Modern Art, and films by Frank Capra, René Clair, Fritz Lang, King Vidor and Jean Renoir. The one film he genuinely studied was John Ford's "Stagecoach", which he watched 40 times. "As it turned out, the first day I ever walked onto a set was my first day as a director," Welles said. "I'd learned whatever I knew in the projection room—from Ford. After dinner every night for about a month, I'd run "Stagecoach", often with some different technician or department head from the studio, and ask questions. 'How was this done?' 'Why was this done?' It was like going to school."
Welles's cinematographer for the film was Gregg Toland, described by Welles as "just then, the number-one cameraman in the world." To Welles's astonishment, Toland visited him at his office and said, "I want you to use me on your picture." He had seen some of the Mercury stage productions (including "Caesar") and said he wanted to work with someone who had never made a movie. RKO hired Toland on loan from Samuel Goldwyn Productions in the first week of June 1940. "And he never tried to impress us that he was doing any miracles," Welles recalled. "I was calling for things only a beginner would have been ignorant enough to think anybody could ever do, and there he was, "doing" them." Toland later explained that he wanted to work with Welles because he anticipated the first-time director's inexperience and reputation for audacious experimentation in the theater would allow the cinematographer to try new and innovative camera techniques that typical Hollywood films would never have allowed him to do. Unaware of filmmaking protocol, Welles adjusted the lights on set as he was accustomed to doing in the theater; Toland quietly re-balanced them, and was angry when one of the crew informed Welles that he was infringing on Toland's responsibilities. During the first few weeks of June, Welles had lengthy discussions about the film with Toland and art director Perry Ferguson in the morning, and in the afternoon and evening he worked with actors and revised the script.
On June 29, 1940—a Saturday morning when few inquisitive studio executives would be around—Welles began filming "Citizen Kane". After the disappointment of having "Heart of Darkness" canceled, Welles followed Ferguson's suggestion and deceived RKO into believing that he was simply shooting camera tests. "But we were shooting the "picture"," Welles said, "because we wanted to get started and be already into it before anybody knew about it." At the time RKO executives were pressuring him to agree to direct a film called "The Men from Mars", to capitalize on "The War of the Worlds" radio broadcast. Welles said that he would consider making the project but wanted to make a different film first. At this time he did not inform them that he had already begun filming "Citizen Kane". The early footage was called "Orson Welles Tests" on all paperwork. The first "test" shot was the "News on the March" projection room scene, economically filmed in a real studio projection room in darkness that masked many actors who appeared in other roles later in the film. "At $809 Orson did run substantially beyond the test budget of $528—to create one of the most famous scenes in movie history," wrote Barton Whaley.
The next scenes were the El Rancho nightclub scenes and the scene in which Susan attempts suicide. Welles later said that the nightclub set was available after another film had wrapped and that filming took 10 to 12 days to complete. For these scenes Welles had Comingore's throat sprayed with chemicals to give her voice a harsh, raspy tone. Other scenes shot in secret included those in which Thompson interviews Leland and Bernstein, which were also shot on sets built for other films. During production, the film was referred to as "RKO 281". Most of the filming took place in what is now Stage 19 on the Paramount Pictures lot in Hollywood. There was some location filming at Balboa Park in San Diego and the San Diego Zoo. Photographs of German-Jewish investment banker Otto Hermann Kahn's real-life estate Oheka Castle were used to portray the fictional Xanadu. In the end of July, RKO approved the film and Welles was allowed to officially begin shooting, despite having already been filming "tests" for several weeks. Welles leaked stories to newspaper reporters that the "tests" had been so good that there was no need to re-shoot them. The first "official" scene to be shot was the breakfast montage sequence between Kane and his first wife Emily. To strategically save money and appease the RKO executives who opposed him, Welles rehearsed scenes extensively before actually shooting and filmed very few takes of each shot set-up. Welles never shot master shots for any scene after Toland told him that Ford never shot them. To appease the increasingly curious press, Welles threw a cocktail party for selected reporters, promising that they could watch a scene being filmed. When the journalists arrived Welles told them they had "just finished" shooting for the day but still had the party. Welles told the press that he was ahead of schedule (without factoring in the month of "test shooting"), thus discrediting claims that after a year in Hollywood without making a film he was a failure in the film industry.
Welles usually worked 16 to 18 hours a day on the film. He often began work at 4 a.m. since the special effects make-up used to age him for certain scenes took up to four hours to apply. Welles used this time to discuss the day's shooting with Toland and other crew members. The special contact lenses used to make Welles look elderly proved very painful, and a doctor was employed to place them into Welles's eyes. Welles had difficulty seeing clearly while wearing them, which caused him to badly cut his wrist when shooting the scene in which Kane breaks up the furniture in Susan's bedroom. While shooting the scene in which Kane shouts at Gettys on the stairs of Susan Alexander's apartment building, Welles fell ten feet; an X-ray revealed two bone chips in his ankle. The injury required him to direct the film from a wheelchair for two weeks.<ref name="cinephiliabeyond/citizen-kane"></ref> He eventually wore a steel brace to resume performing on camera; it is visible in the low-angle scene between Kane and Leland after Kane loses the election. For the final scene, a stage at the Selznick studio was equipped with a working furnace, and multiple takes were required to show the sled being put into the fire and the word "Rosebud" consumed. Paul Stewart recalled that on the ninth take the Culver City Fire Department arrived in full gear because the furnace had grown so hot the flue caught fire. "Orson was delighted with the commotion", he said.
When "Rosebud" was burned, Welles choreographed the scene while he had composer Bernard Herrmann's cue playing on the set. Unlike Schaefer, many members of RKO's board of governors did not like Welles or the control that his contract gave him. However such board members as Nelson Rockefeller and NBC chief David Sarnoff were sympathetic to Welles. Throughout production Welles had problems with these executives not respecting his contract's stipulation of non-interference and several spies arrived on set to report what they saw to the executives. When the executives would sometimes arrive on set unannounced the entire cast and crew would suddenly start playing softball until they left. Before official shooting began the executives intercepted all copies of the script and delayed their delivery to Welles. They had one copy sent to their office in New York, resulting in it being leaked to press. Principal shooting wrapped October 24. Welles then took several weeks away from the film for a lecture tour, during which he also scouted additional locations with Toland and Ferguson. Filming resumed November 15 with some re-shoots. Toland had to leave due to a commitment to shoot Howard Hughes' "The Outlaw", but Toland's camera crew continued working on the film and Toland was replaced by RKO cinematographer Harry J. Wild. The final day of shooting on November 30 was Kane's death scene. Welles boasted that he only went 21 days over his official shooting schedule, without factoring in the month of "camera tests". According to RKO records, the film cost $839,727. Its estimated budget had been $723,800.
Post-production. "Citizen Kane" was edited by Robert Wise and assistant editor Mark Robson. Both would become successful film directors. Wise was hired after Welles finished shooting the "camera tests" and began officially making the film. Wise said that Welles "had an older editor assigned to him for those tests and evidently he was not too happy and asked to have somebody else. I was roughly Orson's age and had several good credits." Wise and Robson began editing the film while it was still shooting and said that they "could tell certainly that we were getting something very special. It was outstanding film day in and day out." Welles gave Wise detailed instructions and was usually not present during the film's editing. The film was very well planned out and intentionally shot for such post-production techniques as slow dissolves. The lack of coverage made editing easy since Welles and Toland edited the film "in camera" by leaving few options of how it could be put together. Wise said the breakfast table sequence took weeks to edit and get the correct "timing" and "rhythm" for the whip pans and overlapping dialogue. The "News on the March" sequence was edited by RKO's newsreel division to give it authenticity. They used stock footage from Pathé News and the General Film Library.
During post-production Welles and special effects artist Linwood G. Dunn experimented with an optical printer to improve certain scenes that Welles found unsatisfactory from the footage. Whereas Welles was often immediately pleased with Wise's work, he would require Dunn and post-production audio engineer James G. Stewart to re-do their work several times until he was satisfied. Welles hired Bernard Herrmann to compose the film's score. Where most Hollywood film scores were written quickly, in as few as two or three weeks after filming was completed, Herrmann was given 12 weeks to write the music. He had sufficient time to do his own orchestrations and conducting, and worked on the film reel by reel as it was shot and cut. He wrote complete musical pieces for some of the montages, and Welles edited many of the scenes to match their length. Style. Film scholars and historians view "Citizen Kane" as Welles's attempt to create a new style of filmmaking by studying various forms of it and combining them into one. However, Welles stated that his love for cinema began only when he started working on the film. When asked where he got the confidence as a first-time director to direct a film so radically different from contemporary cinema, he responded, "Ignorance, ignorance, sheer ignorance—you know there's no confidence to equal it. It's only when you know something about a profession, I think, that you're timid or careful."
David Bordwell wrote that "The best way to understand "Citizen Kane" is to stop worshipping it as a triumph of technique." Bordwell argues that the film did not invent any of its famous techniques such as deep focus cinematography, shots of the ceilings, chiaroscuro lighting and temporal jump-cuts, and that many of these stylistics had been used in German Expressionist films of the 1920s, such as "The Cabinet of Dr. Caligari". But Bordwell asserts that the film did put them all together for the first time and perfected the medium in one single film. In a 1948 interview, D. W. Griffith said, "I loved "Citizen Kane" and particularly loved the ideas he took from me." Arguments against the film's cinematic innovations were made as early as 1946 when French historian Georges Sadoul wrote, "The film is an encyclopedia of old techniques." He pointed out such examples as compositions that used both the foreground and the background in the films of Auguste and Louis Lumière, special effects used in the films of Georges Méliès, shots of the ceiling in Erich von Stroheim's "Greed" and newsreel montages in the films of Dziga Vertov.
French film critic André Bazin defended the film, writing: "In this respect, the accusation of plagiarism could very well be extended to the film's use of panchromatic film or its exploitation of the properties of gelatinous silver halide." Bazin disagreed with Sadoul's comparison to Lumière's cinematography since "Citizen Kane" used more sophisticated lenses, but acknowledged that it had similarities to such previous works as "The Power and the Glory". Bazin stated that "even if Welles did not invent the cinematic devices employed in "Citizen Kane", one should nevertheless credit him with the invention of their "meaning"." Bazin championed the techniques in the film for its depiction of heightened reality, but Bordwell believed that the film's use of special effects contradicted some of Bazin's theories. Storytelling techniques. "Citizen Kane" rejects the traditional linear, chronological narrative and tells Kane's story entirely in flashbacks using different points of view, many of them from Kane's aged and forgetful associates, the cinematic equivalent of the unreliable narrator in literature. Welles also dispenses with the idea of a single storyteller and uses multiple narrators to recount Kane's life, a technique not used previously in Hollywood films. Each narrator recounts a different part of Kane's life, with each story overlapping another. The film depicts Kane as an enigma, a complicated man who leaves viewers with more questions than answers as to his character, such as the newsreel footage where he is attacked for being both a communist and a fascist.
The technique of flashbacks had been used in earlier films, notably "The Power and the Glory" (1933), but no film was as immersed in it as "Citizen Kane". Thompson the reporter acts as a surrogate for the audience, questioning Kane's associates and piecing together his life. Films typically had an "omniscient perspective" at the time, which Marilyn Fabe says give the audience the "illusion that we are looking with impunity into a world which is unaware of our gaze". "Citizen Kane" also begins in that fashion until the "News on the March" sequence, after which we the audience see the film through the perspectives of others. The "News on the March" sequence gives an overview of Kane's entire life (and the film's entire story) at the beginning of the film, leaving the audience without the typical suspense of wondering how it will end. Instead, the film's repetitions of events compels the audience to analyze and wonder why Kane's life happened the way that it did, under the pretext of finding out what "Rosebud" means. The film then returns to the omniscient perspective in the final scene, when only the audience discovers what "Rosebud" is.

Subsets and Splits

No community queries yet

The top public SQL queries from the community will appear here once available.