Question

What caused world war 2 need it asap​

Answer 1

Hitler's invasion of Poland in September 1939 drove Great Britain and France to declare war on Germany,making the beginning of world war 2

Answer 2

Answer and explanation down

Step-by-step explanation:

Go to Wikipedia for more details: The immediate precipitating event was the invasion of Poland by Nazi Germany on September 1, 1939, and the subsequent declarations of war on Germany made by Britain and France, but many other prior events have been suggested as ultimate causes.