The US was forced to declare war on Japan in DECEMBER 9, 1941
the us didn't declare war on china in world war 2 us declared war on japan on 1941 when japan bombed pearl harbor hawii
Japan
On Japan.
Because of Pearl Harbour.
after japan attacked pearl harbor and declared war on japan a German Allie
pearl harbour attack
Pearl Harbor.
December 8, 1941
Declare war on Japan
Japan. Then Germany declared war on the US.
CANADA