# The Mongol Invasion of Bamiyan (1221 CE): Genetic and Historical Perspectives on the Hazara People

## Abstract

This paper examines the Mongol invasion of Central Asia (1219-1221 CE), with particular focus on the siege and destruction of Bamiyan, through the dual lenses of historical documentation and modern genetic evidence. The analysis demonstrates a clear distinction between the Āzrah (Hazara) people and the Mongol invaders, challenging the politically motivated "Mongol label" historically imposed upon the Hazara population.

## Key Findings

- Historical Evidence: Primary sources including the travelogue of Chinese Buddhist monk Xuanzang (7th century CE) confirm that Bamiyan was a thriving Buddhist cultural center centuries before the Mongol invasion.

- Genetic Evidence: A pilot whole-genome sequencing study of Central Asian and Afghanistan Hazaras revealed that the recent east-west admixture occurred approximately 23-31 generations ago, aligning with the Mongol Empire period. This confirms that the Mongol contribution is a genetic layer added to a pre-existing indigenous population, not the foundation of Hazara ancestry.

- Y-Chromosome Analysis: The absence of Y-chromosome "star clusters" (characteristic of Mongol populations) confirms that there has been no single Mongol founder event in Afghanistan. The presence of haplogroup C3 (M401) among Hazaras, while also found in Mongols, Kazakhs, Kyrgyz, Uzbeks, Tajiks, Pashtuns, and Turkmens, indicates historical contacts and admixture rather than direct lineage.

- Archaeological Evidence: Mongol burial sites in Bamiyan, including the tomb of Mutugen (Genghis Khan's grandson), confirm that the Mongol presence was a military invasion and occupation, not a permanent settlement or "founding population."

## Historical Context

The siege of Bamiyan in 1221 CE stands as one of the most brutal episodes of the entire Mongol campaign. According to the historian 'Ala al-Din 'Ata-Malik Juvayni (d. 1283 CE), Genghis Khan gave orders that every living creature should be killed and no prisoners be taken. The buildings were all leveled with the ground, and every living creature was destroyed.

Xuanzang's account (7th century CE) demonstrates that Bamiyan was a thriving Buddhist cultural and religious center well before the arrival of Islam and centuries before the Mongol invasion. This contradicts any narrative that would present the Hazara as "late arrivals" or as a people without deep roots in the region.

## Conclusion

The historical and genetic evidence provides a clear picture:

1. The Āzrah (Hazara) have a deep, pre-Mongol presence in the Bamiyan Valley, supported by the presence of J2a1 haplogroups connected to the Neolithic farmers of the Helmand basin.

2. The Mongol invasion of 1221 CE was a military campaign that resulted in the destruction of Bamiyan and the massacre of its inhabitants. The Mongols did not settle or establish themselves as a permanent population.

3. The Mongol genetic contribution to the Hazara population is a layer, not the foundation of Hazara ancestry. This is confirmed by the absence of Y-chromosome "star clusters" that would indicate a Mongol founder event.

4. The narrative of Hazaras as "Mongols" is a politically motivated label imposed by Pashtun and Tajik powers beginning in the 19th century, lacking support from genetic, archaeological, and historical evidence.

## Keywords

Bamiyan, Mongol Invasion, Hazara, Āzrah, Genetic History, Historical Analysis, Central Asian History, Afghanistan, Genghis Khan, Y-chromosome, Haplogroup, Xuanzang

## References

1. Bamiyan. Encyclopaedia Britannica, National Library of Scotland.
2. Bendezu-Sarmiento, J. The Bamiyan Valley as a center of trade and cultural exchange. HAL Sciences, 2020.
3. Di Cristofaro, J., et al. "Afghan Hindu Kush: Where Eurasian Sub-Continent Gene Flows Converge." PLOS ONE, 8(10): e76748, 2013.
4. Juvayni, 'Ala al-Din 'Ata-Malik. Tarikh-i Jahangushay (History of the World Conqueror).
5. Xuanzang. Great Tang Records on the Western Regions.
6. "A comprehensive exploration of the genetic legacy and forensic features of Afghanistan and Pakistan Mongolian-descent Hazara." ScienceDirect, 2019.
7. World Buddhist Art Dictionary. Bamiyan entry.