History GCSE

Domino Theory

What Domino Theory means in History GCSE, as defined for Pearson Edexcel.

Definition of Domino Theory

Check what you remember

Read the wording for your board, then hide it and explain Domino Theory in your own words. Rough notes are fine. This is a self-check, with no mark or grade.

Reference: Pearson Edexcel

The idea that if South Vietnam fell to communism, neighbouring countries would follow, threatening US security.

Pearson Edexcel · Option 33: Key topic 4: Reactions to, and the end of, US involvement in Vietnam, 1964–75 - 2 Support for the war (study guide)

Topics that use Domino Theory

Option 33: Key topic 4: Reactions to, and the end of, US involvement in Vietnam, 1964–75 - 2 Support for the war (Pearson Edexcel GCSE)

Related terms

Using Domino Theory in the exam

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