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World War II: Summary, Combatants & Facts | HISTORY
World War II | Facts, Summary, History, Dates, Combatants,
World War II - Wikipedia
World War II: Causes and Timeline | HISTORY
Causes, events, and casualties of World War II | Britannica
World War II Major Events Timeline | Masterpiece - PBS
World War II Facts | Britannica
Why Did World War II Happen? | CFR Education
The Scientific and Technological Advances of World War II
Significant Events of World War II - U.S. Department of Defense