Because of Pearl Harbour.
The US was forced to declare war on Japan in DECEMBER 9, 1941
pearl harbour attack
Declare war on Japan
CANADA
japan and Germany were allies (axis powers)
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.
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
Yes. The US declared war on Japan on December 8, 1941, one day after the attack on Pearl Harbor.
Japan. Then Germany declared war on the US.
CANADA