The reason why the Americans sent soldiers to Vietnam was that the United States feared the spread of communism throughout southeast asia.
The U.S. believed in the domino theory which posited that once a nation became Communist, the nations surrounding it would be at rik of Communism as well.
As a result, the U.S. got involved in Vietnam to prevent other nations around Communist North Vietnam from becoming Communist.
Find out more on the Vietnam War at https://brainly.com/question/182779.
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