Which of these was the biggest influence on the wealth of the chinese city of Chang'an? A. the end of the Mongol threat
B. the popularity of the Silk Roads
C. the completion of the Great Wall
D. the increased power of China's navy

i dont know but i need points

the answer is c.

i hope this .

b. martin luther king jr. wrote and spoke "i have a dream"

explanation:

i know this 100 percent is correct   b. is the best one. < 3

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