This site explains how Germany resuming unrestricted submarine warfare contributed to the US entering WWI. Site is well-written, informative, and contains great details.

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Concepts

submarines

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Additional Tags

naval warfare, restricted submarine warfare, submarine warfare, uboats, undersea warfare, world war one, digital history, germany resumes unrestricted submarine warfare, lusitania, president woodrow wilson, unrestricted submarine warfare, wwi, zimmerman telegram

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Classroom Considerations

Knovation Readability Score: 4 (1 low difficulty, 5 high difficulty)

View 73,849 other resources for 9th - 10th Grade Social Studies & History