The Marshall Plan can be seen as a Cold War tactic because the United States federal government tried to prevent the spread of communism through this law. During the Cold War, the US government adopted a policy of containment. This idea focused around preventing the spread of communism to countries all over the world.
The two geographic features are The Andean Mountain range and the Amazon river basin in the northern and central regions of the continent.
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Japanese were ready to surrender.
Admiral Leahy believed the Japanese were weakening and ready to surrender. The atomic bomb would be overkill and he believed it wouldn't work. He was also concerned that if it worked then the US has revealed new technology that would eventually be used against us.