B.
Hitler's main reason for starting World War II was the following:
He wanted to unite the German people
He wanted to expand the land of Germany to feed more people (this is why he demanded Danzig from Poland)
Nikita Krushchev was the Soviet Premier during the Cuban Missile Crisis, which was part of Kennedy's presidency.
The Louisiana Purchase was a negotiation between France and The U.S. in 1803 where the U.S. paid $15 million for approximately 827,000 squared miles
