Which of Hitler's aggressive actions triggered WW II?

Question: Which of Hitler's aggressive actions triggered WW II!?

A!. invasion of Poland
B!. annexation of Austria
C!. invasion of the Rhineland
D!. demand for the Sudentland

Why were magazine stories such as the Ragged Dick series so popular!?
A!. They engaged in yellow journalism
B!. They Described how wealthy Americans lived
C!. They appealed to American's hopes and dreams
D!. They explored popular sports, such as baseballWww@QuestionHome@Com

Best Answer - Chosen by Asker:

the one with hitler and his aggressions!.!.!. all of them contributed to it but the final straw for Great Britain and France was the invasion of poland after Hitler already promised that he would not touch it!.Www@QuestionHome@Com

Regarding Hitler: ALL of them!.

Regarding Ragged Dick: don't know, don't care!.Www@QuestionHome@Com

A !. The invasion of polandWww@QuestionHome@Com

Hitler question: A
Other question: !?Www@QuestionHome@Com