Answer:
The Cold War began after the surrender of Nazi Germany in 1945, when the uneasy alliance between the United States and Great Britain on the one hand and the Soviet Union on the other started to fall apart.
Because of the fur trade.
The fur trade was main form of economy for the French colonies and the French got their fur from you guessed it, Native Americans. French colonists are an exception when it comes to dealing with Native Americans as they had good relationship with them and did not thought of them as inferior. They traded European goods for furs and the Native Americans even helped them by showing them goods hunting spots. So their relationship was one of cooperation.
The US wanted to eliminate the sphere of influence because U.S. politicians and businessmen worried about foreign nations controlled economic development so they supported Open Door Policy.
The Manhattan Project was the name of the project.. :) ;)
Answer:
" The War to End All Wars " as said by FDR in a speech to the american people about declaring war on the Axis Powers in WWII.