Genghis Khan A
met Italian explorer Marco Polo when Polo came to China.

B
ruled over the largest territory any one man had ever ruled.

C
set up the Yuan Dynasty, the first non-Chinese dynasty to rule China.

D
died without any successors to rule over his land.

The answer is C. set up the Yuan Dynasty, the first non-Chinese dynasty to rule China.

Explanation:

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d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer