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The 1877 Commitment promoted political action that was not concerned with the slave situation, but with party disputes between Democrats and Republicans. The action of withdrawing federal troops from the south was not intended to provide a relief of tension in the relationship between slaves and their self-proclaimed owners, but rather aimed at securing the political hegemony of the Republicans, leaving the slaves at bay.
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Answer: tensions between the two nations at the end of World War II, the ideological conflict between both the United States and the Soviet Union, the emergence of nuclear weapons, and the fear of communism in the United States.
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