Answer :

The main contributing factor to WW2 was ,The Nazi Germany invasion of Poland on September 1, 1939, and the simultaneous declarations of war on Germany by Britain and France, were the immediate precipitating events.

Poland was invaded by Hitler because he often made appeals to German nationalism, pledging to "liberate" the German minority still present in the Corridor as well as Danzig, in an effort to reverse the territorial losses suffered after 1918.

Hitler used invasion of Poland as the reason to start war.

What sparked World War 2?

The start of World War II was precipitated by Hitler's invasion of Poland in September 1939, which prompted Great Britain and France to declare war on Germany.

The struggle would claim more lives and obliterate more land and property worldwide over the following six years than any other conflict in history.

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