What is the term for requiring citizens to provide food and shelter for soldiers?

It’s not so much a term but more of an act.

The Quartering Act, passed in Britain which required citizens to provide living quarters and food for.  

The Quartering Act is the answer

b.

explanation:

he is racist

"oh, lets coppy china and build a great wall around bla bla bla.that way,we wont lose out to other countries." in the end, he did not build anything

nothing certain is known about what happened, but it seems that the country declined gradually, perhaps due to bad government, or, more likely, due to a series of bad harvests, which resulted in widespread and recurrent famine.