Question

Why was Second world war happend​

Answer 1

Hitler's invasion of Poland in September 1939 drove Great Britain and France to declare war on Germany, and World War II had begun. 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

Answer:

because of germany

Explanation:

at the time after the first world war germany was the only country which was severly hit by economic crisis .That time only a leader arises named hitler who promissed to give the good status to germany and from here only he started conquering other countries .hence the second world war started