Causes and Mechanism
The conflict grew from the French Indochina War. After France's defeat, the Geneva Accords of 1954 temporarily divided Vietnam at the 17th parallel: Ho Chi Minh's communist government controlled the North, while an anti-communist government developed in the South.
The USA applied containment and the domino theory, fearing that communist victory would spread communism across Southeast Asia. It supported Ngo Dinh Diem despite his government's repression and weak legitimacy.
| Factor | How it intensified the war |
|---|---|
| Vietnamese nationalism | Ho Chi Minh's movement sought reunification and independence after French colonial rule. |
| Political division | Failure to reunify peacefully encouraged conflict between North and South. |
| Cold War rivalry | The USA backed South Vietnam; China and the USSR assisted North Vietnam. |
| Southern instability | Diem's repression strengthened rural opposition and the National Liberation Front. |
| US escalation | The Gulf of Tonkin Resolution (1964) enabled Johnson to expand US involvement. |
Why the USA Withdrew
US technological superiority could not overcome guerrilla warfare, difficult terrain, North Vietnamese determination, or South Vietnam's weaknesses. The Tet Offensive of 1968 was a communist military setback, but it discredited claims that victory was near.
Casualties, financial costs, media coverage, and credibility problems increased domestic opposition. President Nixon adopted Vietnamization, reduced US forces, and negotiated the Paris Peace Accords of 1973; US combat forces then withdrew.
A common misconception is that Tet defeated the USA militarily. Its main significance was political and psychological: it weakened public support and confidence in US strategy.
Exam technique: For a Paper 3 essay, group causes into Vietnamese, regional, and Cold War factors. Explain withdrawal through military stalemate interacting with domestic pressure, not one event.
