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7.4 World War I: Military and Diplomacy

Part of Period 7: 1890–1945 in AP® US History. Read the opening section, then create a free account for the full interactive lesson, practice, and progress tracking.

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When war broke out in Europe in 1914, President Woodrow Wilson declared neutrality. Yet economic and political ties drew America closer to the Allies. Germany’s unrestricted submarine warfare, including the sinking of the Lusitania, turned opinion against Germany. The Zimmermann Telegram further inflamed tensions.

In this unit

13 lessons

  1. 7.1Imperialism: DebatesPreview lesson
  2. 7.2The Spanish-American WarPreview lesson
  3. 7.3The ProgressivesPreview lesson
  4. 7.4World War I: Military and DiplomacyThis lesson
  5. 7.5World War I: Home FrontPreview lesson
  6. 7.61920s: Innovations in Communication and TechnologyPreview lesson
  7. 7.71920s: Cultural and Political ControversiesPreview lesson
  8. 7.8The Great DepressionPreview lesson
  9. 7.9The New DealPreview lesson
  10. 7.10Interwar Foreign PolicyPreview lesson
  11. 7.11World War II: MobilizationPreview lesson
  12. 7.12World War II: MilitaryPreview lesson
  13. 7.13Postwar DiplomacyPreview lesson

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