The middle class I'm pretty sure
Product is the result of multiplication so it would be
A. 40 times d
After world war 1 the United States wanted to isolate themselves from things like that because of how bad the war was. They went as far as to not join the league of nations that their President made himself with other presidents. After the Korean War, they decided to not isolate themselves and meddle as much as possible to prevent the spread of communism because it would strengthen the Soviet Union who was the main enemy.
Answer:
c Many Americans rebelled against the Stamp Act. They relied on the Liberty Tree as a place to meet to devise plans to gain their independence
A way to end conflicts between nations is one of the functions of the UN
