Answer:
c: the ming
Step-by-step explanation:
Rulers in china started to become fearful of the influcene of westerners and others that were coming to trade in China. As a result, they started to but off trading ties with them as well as ban certain people to come into their lands so that they could have as little contact with them as possible. The reason that they stopped trade even though it was a large part of their economy was because the main reason that people met up and shared ideas in the first place was trade. Without trade you wouldn't have hundreds of peopl coming in and out or interacting with chinese citizens and merchants.