Which of the following Chinese dynasties did extensive work on building the Great Wall of China? A. Qing
B. Tang
C. Yuan
D. Ming

D

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  D. Ming

Explanation:

The most extensive and best-preserved version of the wall dates from the MING dynasty 1368–1644) and runs for some 5,500 miles (8,850 km) east to west from Mount Hu near Dandong, southeastern Liaoning province, to Jiayu Pass west of Jiuquan, northwestern Gansu province.

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