What event triggered world war ii?
a. germany's annexation of austria
b. germany's invasion of poland
c. germany's occupation of the sudetenland
d. germany's invasion of france

The answer is: b. Germany's invasion of Poland

At that time, the invasion was seen as a very aggressive move that shows Hitler's intention to take over Europe (the countries in western Europe believe that it's only a matter of time before Hitler turned his attention to their countries) . Poland asked for support from France and Great Britain which officially marked the alliance's entry into the world war II,

i see you are doing the same test on usa test prep. cause you are in the same class as me