Germany's invasion of which country started World War II?

1 Answer
David P
Aug 1, 2016

The invasion of Poland on September 1st 1939.

Explanation:

Hitler assumed the West would do nothing to stop his aggression and expansionism as they had done previously. However this time Great Britain and France held firm to their commitments. On September 3rd 1949 they declared war on Germany. World War 2 had begun.

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