<span>The change came before World War Two rather than after the War. President Roosevelt and his advisors concluded that the United States needed to become involved in foreign affairs in both the Atlantic and the Pacific theaters. In the Atlantic sector, the key blow was the fall of France. This meant that the only anti-Nazi power in Europe was Britain. Even though Britain managed to weather the first great crisis, the Battle of Britain, Prime Minister Churchill knew that the British could not go on without help. The British simply could not maintain sufficient manufacturing, especially of big capital projects, without assistance. </span>
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The correct answer is Head Diplomat.
Many are the roles of a Foreign Policy Leader (also known as a Head Diplomat or Chief Diplomat), such as recognizing the legitimacy of a foreign nation, appointing ambassadors, establishing foreign policies, making treaties, making executive agreements. In the United States, the president is also the Chief Diplomat.
The answer is choice A. During the Cold War, the goal of the US was to was to isolate the Soviet Union from spreading Communism, encourage Democracy and to promote open markets for the US goods to prevent another depression.