Question: The empire that Ayurbarwada Buyantu Khan was the eighth Great Khan originated where?
Sentence (from "Toluid Civil War"): The Toluid Civil War, and the wars that followed it (such as the Berke–Hulagu war and the Kaidu–Kublai war), weakened the authority of the Great Khan over the Mongol Empire and split the empire into autonomous khanates.
Relevant evidence: No