1. Some reasons on why the Cold war started was due to different ideology's the democratic united states and communist soviet Russia, both Russia and the united states had different outcomes for when world war 2 ended.
2. US civil rights movements at the end of the second world war 2 revolved around giving African Americans more civil rights and normalizing and giving women civil rights.
It was one of the reasons the US joined the war. With that, the Germans and Central Power started to lose (they had no chances after the sinking and the Zimmermann telegram)
Congress. It consists of 2 chambers, The Senate (made up of Senators), and The House of Representatives
The compromise helped gather enough support for the Constitution to ensure its ratification and for it to go to the adoption of the first ten amendments and the Bill of Rights. Anti-Federalists were scared that the Constitution would make the government overly-confertalized and that it would diminish individual rights and liberties.
I hope this helped, im quite young so theres only so much I know.. :)