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World War II - Wikipedia
World War II | Facts, Summary, History, Dates, Combatants,
World War II - Simple English Wikipedia, the free encyclopedia
World War II - Wikiwand
Causes of World War II - Wikipedia
World War II: Summary, Combatants & Facts | HISTORY
Outline of World War II - Wikipedia
Military history of the United States during World War II
World War II: Causes and Timeline | HISTORY
World War II by country - Wikipedia