Final answer:
The shift in U.S. policy towards entering World War I was influenced by the ongoing Russian Revolution and the rise of the Bolsheviks.
Explanation:
The shift in U.S. policy towards entering World War I was influenced by various factors. The ongoing Russian Revolution and the rise of the Bolsheviks played a crucial role in shaping U.S. government policy. As Germany appeared to gain an upper hand and Bolsheviks threatened to take power in Russia, the U.S. saw an opportunity to support its allies, Britain and France, ultimately leading to the decision to enter the war to bolster morale and counter the Socialist revolution.
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