Answer:
the fear of foreign invasion
Explanation:
Re-establishing Chinese rule after the defeat of the Mongols, the Ming dynasty took an isolationist and authoritarian approach to leadership. Thanks to the dynasty's fear of foreign invasion, the Great Wall was significantly lengthened and Beijing's famous Forbidden City built under direction of the Ming.
-sometimes consent is not enough, voluntary exchanges can be unfair, ex: old woman who agrees to pay $50 thousand for a toilet job
<span>-benefit may not always guarentee a moral claim: ex: squeege men </span>
<span>-sometimes benefit is enough, ex: Hume's house repairs </span>
<span>-obligation does not guarantee consent </span>
<span>-reciprocity has implications as well as consent in moral claims</span>
ensured job specialization among people and ensured equality among men and women of the same class hope this helps <3