Answer:
They changed from isolationism to interventionism because of the bombing of Pearl Harbor. This event brought war to them so they entered WW2.
<span>German zones of occupation would have free elections.
The February 1945 Yalta Conference was the second wartime meeting of British Prime Minister Winston Churchill, Soviet Premier Joseph Stalin and U.S. President Franklin D. Roosevelt. During the conference, the three leaders agreed to demand Germany's unconditional surrender and began plans for a post-war world.</span>
Taxed them on alot of things
I wold say its A, and people feared communism would rise further than it did, and that anyone around them might believe in the idea of it. he used it to make it seem even worse, and that it could be anyone around you who is a communist, and that they might be trying to destroy America. He made it seem far bigger than it actually was.
The law accelerated westward expansion