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The United States sent assistance to train the South Vietnamese people to help them learn to fight against the Northern Communists in Vietnam.
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Northern Viet Cong begin to move into the Southern territories and kill 400 Southern officials.
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The U.S. passes the Gulf of Tonken Resolution.
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United States launch an air raid campaign over North Vietnam.
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The United States developed and tested Agent Orange on Vietnam, Cambodia, and Laos.