In general, World War II greatly aided in the spread of communism because the one of the three main victorious allies was Russia, meaning that much of the post-war landscape was at their disposal.
Answer:
Marbury v. Madison: No judicial review, higher likelihood of increased power of a particular branch of gov't
Plessy v. Ferguson: No segregation
Brown v. Board of education of Topeka: Segregation would still be constitutional
1 is c 2 is a 3 is d and 4 is d
First Continental Congress, I believe