Final answer:
Temüjin was elected Genghis Khan during a kurultai in 1206, marking his rise to supreme leader of the Mongols and the start of the Mongol Empire.
Step-by-step explanation:
In 1206, Temüjin was elected khagan, or khan of khans, and took the name "Genghis Khan." This election took place during a kurultai, which was an assembly of the leading chieftains. Genghis Khan's election as khagan marked his rise to supreme leader of the Mongols and the start of the Mongol Empire.
Genghis Khan's election as khagan occurred after he had gained control of increasing numbers of commoners and built a loyal and powerful force. With his military innovations and growing following, Genghis Khan was able to bring about his vision of a better life for his people and establish his authority.
Genghis Khan's election as khagan took place in Mongolia, where he had used his skills as a raider to attract wider attention and concluded a treaty with a traditional chieftain, which gave him access to a larger contingent of men.