Answer :
The Ming dynasty need to rebuild the Great Wall of China, rather than continue to use the wall built by the Qin dynasty and its early successors
B. The old wall had been demolished during the Yuan dynasty.
What happened to the Great Wall after the Mongols?
Fast forward a century later: The Chinese regained power in 1368, after they drove the Mongols back north signaling the start of the Ming Dynasty (1368-1644). All of the modern sections of the wall (that you typically see in photos) were created during the Ming Dynasty.
Why was the Great Wall of China destroyed?
Besides natural influences, human activity has been a huge cause of damage to the Great Wall. The people living nearby allowed their goats and cattle to graze on the Great Wall. Year after year, the activities of these animals caused the bricks and earth to collapse until the sections of wall were finally destroyed.
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