Who Started World War II?

[Betonov]

Originally Posted by Sailor Steve

But we are specifically not doing that. We're speaking of who started the war.

The Nazis.

Nazis invaded Poland September 1st and set in motion the alliance system that brought Britain and France into the conflict.
Yes, Britain did declare war on Germany and not vice versa, but after Germany invaded an ally and refused to back out after repeated attempt by London to defuse the situation.