The Ming dynasty during the 15th century was important for art but mainly known for building of

The Ming Dynasty

Explanation:

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.

answer: (fluidity)is the correct answer.

explanation: because of this characteristic, success on the battlefield depends in large part on the ability to adapt to proactively change events to our advantage as well as to react quickly to constantly changing conditions

b is the answer i am assuming