What were the cause of world war 2 ?

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: study

explanation:

maybe if you get off your phone and start studying you might do well but that’s your decision if you want to stay in summer school