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After reading 1875 websites, we found 4 different results for "When did the Second World War begin"
1939
The Second World War began on September 1, 1939, with the invasion of Germany over Poland.
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on September 1, 1939 – Germany’s invasion of Poland
Most historians agree that the Second World War began on September 1, 1939 – Germany’s invasion of Poland.
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on September 1, 1939,
The Second World War began on September 1, 1939, with the invasion of Germany over Poland.
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on September 3, 1939
Just before the Second World War began on September 3, 1939, Jews were already suffering extermination at the hands of Nazi Germany.
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