The event that triggered World War II was Germany's invasion of Poland on September 1, 1939. This act of aggression prompted Britain and France to declare war on Germany, marking the official start of the conflict.
What event triggered World War II?
Responses
Germany's annexation of Austria
Germany's annexation of Austria
Germany's invasion of France
Germany's invasion of France
Germany's occupation of the Sudetenland
Germany's occupation of the Sudetenland
Germany's invasion of Poland
1 answer
1 answer