Immediate conflicts:
... The USA had atomic weapons and the USSR did not. (The US would not share that technology with the Soviets.)
... The USSR did not assure that free and fair elections took place in Eastern Europe -- it saw to it that Soviet-aligned governments were installed there.
... Tensions over the East Germany / West Germany and East Berlin / West Berlin division of territory.
Deeper causes:
The USA was committed to capitalism and democratic institutions of government.
The USSR was committed to communism and imposed authoritarian government.
The Cold War was mostly a tension between these worldviews.
I need to pay my mortgage
Roosevelt believed that the government had to step in to
resolve the problems brought about by the Depression. Hoover felt that it was the people should be
the ones who must solve this. Though he
did launch some programs, it was not enough.
The problem was too big and Roosevelt felt that it was time for
government to help solve the crisis.
Answer: It effectively ended Japanese Naval Supremacy.
Explanation:
Before the Battle of Midway, the Japanese were a very formidable force in the Pacific. Their navy boasted of several aircraft carriers which allowed them to sink ships with planes and they used this to devastating effect against the Americans at Pearl Harbor and the Australians.
The Japanese knew that if they could capture Midway, they would get the opportunity to negotiate favorably with the Americans and the Americans knew they could not lose Midway due to its strategic location.
The Americans broke the Japanese code for the battle and figured out their plans and used this to inflict a heavy loss on the Japanese by sinking 4 of their aircraft carriers. The Japanese Navy never recovered from this and for the rest of the war, they were on the defensive.
