Answer:
A. We constructing the great wall in constructing large ships for exploration
Explanation:
1 Majority of the existing Great Wall of China was built in the Ming era.
#2 Seven epic voyages were led by the great Chinese admiral Zheng He.
#3 Ming period saw great development in printing.
#4 The most comprehensive book on traditional Chinese medicine was written.
The Ming Dynasty ruled China from 1368 to 1644 A.D., during which China's population would double. Known for its trade expansion to the outside world that established cultural ties with the West, the Ming Dynasty is also remembered for its drama, literature and world-renowned porcelain.
