germany’s invasion of which country started world war ii?

World War II began when Germany invaded Poland on 1 September 1939.

Quick Scoop

• Germany’s invasion of Poland triggered Britain and France to declare war on Germany on 3 September 1939, turning a regional attack into a wider European conflict.

• The invasion followed the secret Molotov–Ribbentrop Pact between Germany and the Soviet Union, which included a plan to divide Polish territory between the two powers.

• By early October 1939, Poland was fully defeated and partitioned by Germany and the Soviet Union, marking the brutal opening chapter of World War II in Europe.

In short: Germany’s invasion of Poland is universally recognized as the event that started World War II.

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