Steam locomotives carried mail across the countryside.


The Manhattan Project developed atomic weapons.


Sputnik launched and kicked off the space race.


MySpace was the most popular social network for a while.


The first iPads changed tablet computing.


Fidget spinners were everywhere in middle schools.


Schools went remote during the pandemic; everyone wore N95s and used Zoom.


Creators blew up on TikTok and AI tools like ChatGPT became common.


Horse-drawn carriages lined unpaved city streets.


Rationing and blackouts were common during the Blitz.


The Berlin Wall symbolized Cold War tensions.


The Iraq War dominated headlines; people used early Facebook.


App stores exploded; people queued for new iPhones.


Fortnite and Instagram Stories became daily habits.


Lockdowns, PCR tests, and Zoom school were widespread.


Hybrid work continues; large language models entered workplaces.