kuriltai

…formal election in a great kuriltai, or general assembly of shamans, was witnessed by the friars along with more than 3,000 envoys and deputies from all parts of the Mongol empire. On August 24 they were present at the formal enthronement at the nearby camp of the “Golden” Ordu and…

There his associates held a kuriltai, or “great assembly,” and on May 5 Kublai was unanimously elected khan, thus succeeding Möngke.