An ulus is a term used in the Mongol Empire to describe a regional realm, territory, or state ruled by a line of Genghis Khan's descendants. It combined land, people, and a government under one ruler.
How it worked:
- Meaning and origin: The word ulus comes from Turkic/Mongol usage meaning people or nation and, over time, state.
- Function: Each ulus was a semi-autonomous region within the empire. It had its own ruler, army, taxation, and administration, but owed loyalty to the Great Khan in Mongolia.
- Major uluses: Four famous ones formed after Genghis Khan: the Golden Horde (Jochid Ulus) in the northwest; the Chagatai Ulus in Central Asia; the Ilkhanate in Persia; and the Yuan Dynasty in China.
- Significance: The ulus system helped rule vast lands, but over time these regions developed more independence, contributing to the empire's later fragmentation.
In short, an ulus is a regional state created for a branch of Genghis Khan's family, functioning within a larger Mongol empire.