Belief that if one country fell to Communism, neighboring countries would also fall

• Domino Theory

• Containment Policy

• Tet Offensive

• Gulf of Tonkin Resolution

1968 Attack by Viet Cong and North Vietnamese forces throughout South Vietnam

• Tet Offensive

• Gulf of Tonkin

• Ho Chi Minh Trail Attack

• Fall of Saigon

Classified secret U.S. government study that revealed American leaders had intentionally involved the U.S. in Vietnam without fully informing the American people, leaked to The New York Times in 1971

• Pentagon Papers

• Gulf of Tonkin Resolution

• War Powers Act

• Paris Peace Accords

Anti-Communist leader of South Vietnam, initially supported by the U.S.; he was unable to defend against the invasion by North Vietnamese Communist

• Ngo Dinh Diem

• Ho Chi Minh

• Mao Zedong

• Chiang Kai-shek

Communist Military leader of North Vietnam during the Vietnam War

• Ho Chi Minh

• Mao Zedong

• Ngo Dinh Diem

• Chiang Kai-shek

South Vietnamese communist rebels who waged a guerrilla war against the government of South Vietnam throughout the Vietnam War

• Viet Cong

• Ho Chi Mihns

• North Viet Communists

• Viet Charlies

Communist Supply Line to the Vietcong, ran from North Vietnam and passed through neutral Cambodia

• Ho Chi Minh Trail

• Mai Lai Trail

• Tet Offensive Trail

• Bataan Death March

Violence committed against unarmed civilians when a company of U.S. soldiers brutally killed old men, women, and children

• My Lai Massacre

• Trail of Tears

• Ho Chi Minh Massacre

• Bataan Death March

1964 congressional resolution authorizing President Johnson to take military action in Vietnam

• Gulf of Tonkin Resolution

• War Powers Act

• Tet Offensive

• Pentagon Papers

1975 North Vietnamese offensive into South Vietnam, overtook Saigon and unified North and South Vietnam into one Communist Country

• Fall of Saigon

• Tet Offensive

• My Lai Massacre

• Bataan Death March