The empire that Ayurbarwada Buyantu Khan was the eighth Great Khan originated where?
Ayurbarwada Buyantu Khan:  Apart from Emperor of China, he is regarded as the eighth Great Khan of the Mongol Empire or Mongols, although it was only nominal due to the division of the empire. Mongol Empire:  Originating in the steppes of Central Asia, the Mongol Empire eventually stretched from Eastern Europe to the Sea of Japan, extending northwards into Siberia, eastwards and southwards into the Indian subcontinent, Indochina, and the Iranian plateau, and westwards as far as the Levant.
Central Asia