answersLogoWhite

0

The US went to war with Germany because Germany declared war on the US, on December 11, 1941. This was four days after Germany's ally Japan attacked the US fleet in Pearl Harbor, and three days after the US declared war on Japan. Germany was not obligated to declare war against the US under the terms of its treaty of alliance with Japan. Germany would have been obligated only if Japan were attacked, and not if Japan was itself the aggressor. Nevertheless Germany decided to open hostilities.

User Avatar

Wiki User

15y ago

What else can I help you with?