Because France was occupied and Britain stood alone
C
It can’t be A because, obvious.
It can’t be B because he’s advocating for third parties.
It won’t be D because he says nothing about the constitution nor banning political parties.
C
Answer:
Knights
Explanation:
Knights were part of the medieval military and they served whoever employed them, which were mostly monarchs and nobles.
The smallpox epidemic.
The millitary invasion was devastating but not to the extent of smallpox.
The Jesuits did not really devastate the New World.
Enslavement for sugar plantations mostly occurred with Africans.
Smallpox, brought in by the Columbian Exchange, had a widespread impact that killed a large portion of natives in the Americas.
So the Smallpox epidemic is the answer.