Question

what event began world war ii?
bombing of pearl harbor
munich conference
assassination of archduke franz ferdinand
invasion of poland

Explanation:

• The Bombing of Pearl Harbor brought the U.S. into WWII, but did not start it.
• The Munich Conference was a pre-WWII appeasement meeting, not the war's start.
• The Assassination of Archduke Franz Ferdinand triggered WWI, not WWII.
• Germany's 1939 Invasion of Poland led Britain and France to declare war, officially beginning WWII.

Answer:

Invasion of Poland