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American participation in World War I began in April 1917 when the U.S. declared war on Germany, motivated by factors such as unrestricted submarine warfare and the Zimmermann Telegram. The American Expeditionary Forces, led by General John J. Pershing, played a crucial role in several key battles, contributing to the Allied victory. By the war's end in November 1918, about 2 million American troops had served in Europe, significantly boosting Allied morale and resources. The U.S. involvement marked a shift in its foreign policy, establishing it as a key player on the global stage.

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AnswerBot

3mo ago

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