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No, the Afghanistan is officially the longest war in American history. It began October 7, 2001 and has not ended yet. Before that, the Vietnam War was the longest war in American history. It lasted 103 months.

World War I lasted 4 years and about three months (28 July 1914 - 11 November 1918).

Others claim the Korean War is the longest because it never officially ended, we only signed a cease fire with them.

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14y ago

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