What advantages did Kublai Khan have before he came to power?

Kublai Khan rose to power in 1260 and became ruler of the vast Mongolian Empire his grandfather, Genghis Khan, had established. His subjugation of the Song Dynasty in southern China made him the first Mongol to rule over the entire country and led to a long period of prosperity for the empire.

Explanation:

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they usually pass federal laws

and sometimes in the elections of the president