Question

What action...by what country...led to World War II?

Answer 1

Answer: Hitler's invasion of Poland in September 1939 drove Great Britain and France to declare war on Germany, marking the beginning of World War II. Over the next six years, the conflict would take more lives and destroy more land and property around the globe than any previous war.

Answer 2

The invasion of Poland by the USSR, but most importantly, Nazi Germany, was what led to World War II.

Step-by-step explanation:

France and Great Britain tried to follow the policy of appeasement in an effort to please Hitler and to avoid another war. However, when Germany invaded Poland, France and Great Britain decided that Germany had stepped too far, and so they mobilized their armies, starting what is now known as the Phoney War.

It will last until the German blitzkreig throughout western Europe.

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