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HomeOCR GCSE HistoryWorld Depth Study: The USA in the 20th Century, 1920–73
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World Depth Study: The USA in the 20th Century, 1920–73

84 words · Last updated July 2026

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What you'll learn

American society, economy and rights in the 20th century.

Key themes

  • The Roaring Twenties, Prohibition and the KKK.
  • The Wall Street Crash (1929) and Roosevelt's New Deal.
  • Civil rights: Brown v Board (1954), Martin Luther King and non-violent protest.

Exam tips

  • Link economic boom and bust to social change.
  • Use civil rights milestones as evidence.

Common mistakes

  • Confusing the causes and effects of the Crash.
  • Vague answers on civil rights.
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