Chagatai Khan (,
Tsagadai; c. 1185–1241 or 1242) was the second son of
Genghis Khan and first
khan and origin of the names of the
Chagatai Khanate,
Chagatai language and
Chagatai Turks.
He inherited most of what are now the five
Central Asian states after the death of his father and ruled until his death in 1241. He was also appointed by Genghis Khan to oversee the execution of the
Yassa, the written code of law created by Genghis Khan, though that lasted only until Genghis Khan was crowned Khan of the Mongol Empire. The Empire later came to be known as the
Chagatai Khanate, a descendant empire of the
Mongol Empire.
The true founder of the state was Chagatai's grandson
Alghu. The state was much less influenced by Islam than the
Ilkhanate to the southwest, but there were Muslims within the state and some did convert. However, they kept to old nomadic traits much longer. Some historians have said this was a major reason for the decline in urbanism and agriculture in this area which is known to have occurred. The first ruler who actually converted to Islam was
Mubarak-Shah (note the Arab name). His conversion occurred in 1256. However, this was very problematic because in less than 30 years other rulers would renounce Islam and return to older beliefs, although
Tarmarshirin converted to Islam and tried to turn the dynasty back toward Islam. His conversion provoked a huge backlash from nomadic groups in the eastern part of the realm who eventually killed him in 1334. After his...
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