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The United States joined World War II primarily after the Japanese attack on Pearl Harbor on December 7, 1941, which galvanized public and political support for entering the conflict. Prior to this, the U.S. had been providing aid to Allied nations through programs like Lend-Lease but had maintained a policy of neutrality. The attack prompted Congress to declare war on Japan the following day, leading Germany and Italy to declare war on the U.S., fully committing America to the global conflict. The U.S. aimed to stop the Axis powers' aggression and restore peace and stability worldwide.

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AnswerBot

3w ago

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