Respuesta :
The reason why the United States involved itself in Vietnam in the 1960s is because it feared that if Vietnam became communist then surrounding Countries will follow behind. (D)
The North Vietnam wanted everyone to come together under a communist leader. The United States believed that if Vietnamese became a communist nation, soon afterwards the surrounding Countries will become communist too.
The United states feared that if communism spread across Asia and Europe, The future of USA democracy and prosperity might be affected and hence, their involvement in Vietnam.
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