Pearl Harbor.
No we declared war on japan then Hitler declared war on us all after pearl harbor
The US was forced to declare war on Japan in DECEMBER 9, 1941
Japan bombed Pearl Harbor. That incited the USA to declare war on Japan and Germany.
CANADA
To declare immediate war on Japan.
after japan attacked pearl harbor and declared war on japan a German Allie
Pearl Harbor was the main reason the US joined the war. They declared war on Germany and Japan because Japan bombed Pearl Harbor, and Germany was Japan's ally.
Japan. Then Germany declared war on the US.
google pearl harbor dumbf***
japan and Germany were allies (axis powers)
Germany had a pact with Japan and Italy.