Question

Why did World War 2 start?

Answer 1

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.

Step-by-step explanation:

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

Well, From what i know... WWR started in September 1, 1939 because Germany invaded Poland and the U.K and France declared on Germany to protect Poland