Vietnam War and Protest Movements · US History

The 'Domino Theory' was the primary justification for U.S. involvement in Vietnam, suggesting that:

  1. Economic aid was more effective than military force
  2. Vietnam was the key to controlling the global oil supply
  3. Democracy would eventually spread without any American intervention
  4. If one country fell to communism, nearby countries would also fall
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Correct answer: If one country fell to communism, nearby countries would also fall

U.S. policymakers feared that a communist victory in Vietnam would lead to a chain reaction across Southeast Asia. This Cold War logic drove the policy of containment in the region.

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