The U.S. isolationist ideal lapsed briefly at the beginning of the twentieth century with our involvement in which war?

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The U.S. isolationist ideal lapsed briefly at the beginning of the twentieth century with our involvement in World War I, as it was the first global conflict in which the United States became involved and helped to establish the country as a world power. Additionally, the U.S. involvement in World War I marked a departure from the country's previous foreign policy of neutrality and non-intervention in European affairs.

The US Isolationist Ideal Lapsed Briefly at the Beginning of the the Twentieth