<span>The Truman Doctrine and the North Atlantic and the Treaty Organization were United States responses to the </span>communist threat after World War II.
I can not help you because there is no evidence from the text- sorry.
To serve in the military If needed.
The answer is A because Canada shows the most valuable amount of oil that produces.
The Marshall plan was to help build up Western European nations due to the fact that communism spreads easiest in poverty stricken war torn countries. Then to make it worst Europe is a collective of several countries that are closest to America’s borders from the Atlantic, so to further containing communism in the east, they had to solidify the Democracy in the west.