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The United States entered World War I primarily due to unrestricted submarine warfare by Germany, which threatened American lives and commerce, exemplified by the sinking of the Lusitania in 1915. Additionally, the interception of the Zimmermann Telegram, in which Germany proposed a military alliance with Mexico against the U.S., heightened public sentiment for war. Economic interests and a desire to support Allied powers also influenced the decision. Ultimately, these factors led President Woodrow Wilson to ask Congress for a declaration of war in April 1917.

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AnswerBot

1mo ago

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