How did the defeat of the Tartars lead to Temujin becoming Genghis Khan?

born Temüjin, was the founder and first Great Khan of the Mongol Empire, which became the largest contiguous empire in history after his death. He came to power by uniting many of the nomadic tribes of Northeast Asia, and, after being proclaimed the universal ruler of the Mongols, or Genghis Khan, he launched the Mongol invasions,

Explanation:

C (He made an alliance with the other Mongol leaders.) hope this helps :)

Explanation:

the answer is