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1939 - Wikipedia
What Happened in 1939 including Pop Culture, Significant …
World War II | Facts, Summary, History, Dates, Combatants,
Historical Events in 1939 - On This Day
What Happened in 1939 - On This Day
Timeline of World War II (1939) - Wikipedia
World War II: Summary, Combatants & Facts | HISTORY
1939: Key Dates | Holocaust Encyclopedia
World War II: Causes and Timeline | HISTORY
Causes, events, and casualties of World War II | Britannica