Premise: The division of the Mongol Empire began when Möngke Khan died in 1259 with no declared successor , precipitating infighting between members of the Tolui family line for the title of Great Khan that escalated to the Toluid Civil War . Genghis Khan . Later his grandsons split his empire into khanates .
Hypothesis: Genghis Khan's empire was split by his grandsons in 1000 CE.
Label: CONTRADICTION