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.
 
        
             
        
        
        
The answer to this question is VOTING 
 
        
             
        
        
        
Assuming that this is referring to the same letter that was posted before with this question, the response is "(3) power of impeachment by the House of
<span>Representatives"</span>
        
             
        
        
        
"c. The city became a central hub for trade, which contributed to the empires growth" best describes the effect of Constantine moving the capital to Constantinople, since it was a thriving metropolis.