Which of the following items was an important development and advance to the economic growth of the Ming?
a. Replacement of silk by cotton
b. Cultivation of crops from the Americas such as corn, potatoes, and peanuts
c. A shift away from rice growing
d. Increase in cattle-raising
Question 2
Which of the following is NOT a key reason for the criticism and abolishment of Admiral Zheng's naval expeditions?
a. They created too much emphasis on trade.
b. Their cost was more than could be made through trade.
c. Corruption in procuring shipbuilding materials and shipyard contracts occurred.
d. Controversy over Zheng's identity as a Muslim and eunuch.