no one No one 'invited' the US persay, but they were in it(Of course). They were in it because they wanted to help their allies from Germany (Ex: Great Britan) and I think that Germany attacked one of the US's boats which the US took as a threat
They did it not for what is right, but cause Germany annoyed them
Germany was sinking too many American ships, so the US went to war
Germany and Italy with hitler and mussolini
Suspicion of Germany's autocratic government
we felt bad
Germany fought the us in world war 1
No Germany declares war on US
To help avoid the Russians taking over Europe.
Germany
To help win the victory over the Nazi German forces.
Germany
germany
The US declared war on Germany, hour after Germany declared war on the US on December 11, 1941.
Germany declared war on the US after Pearl Harbour.
The US declared war on Germany on Dec 11th 1941, (two days after Germany declared war on the US). Everything since that date to the present is after.
The US did enter into an undeclared shooting war with Germany in the fall of 1941 because Germany has declared war on the US.