Answer:
The Republican Party
Explanation:
The Republican Party promised not to get between the states and slavery, but then refused to further expand slavery into the territories.
I believe you're looking for manorialism.<span />
Answer:
The answer is "The Marshall Plan pursued containment through the use of the spread if Communism in Europe"
I believe that the United States had no imperialistic motives for entering WWII. Because Great Britain, Russia, and Germany all used to be empires at some point in their history, and they might have wanted to become empires again, whereas America had no such wishes.