Chagatai Khan (also spelled Djagatai), a son of Genghis Khan, controlled the Mongol Empire territories of Central Asia. These territories would later become the Mongol-Turkish states. He was principal official for upholding Yassa of Genghis Khan. He was known as very strong supporter of his father Genghis Khan's policies.

Chagatai Khan died in 1241.

By 1369, Tamerlane would conquer the Chagatai Khanate in his attempt to reconstruct the Mongol Empire.