The Japanese bombed pearl harbour in America so then the Americans bombed two major Japanese cities (Hiroshima and nagasaki)
The u.s. DID get involved.
yes they were
No
yes
World War 2
the US by FAR.
December 8, 1941 was the date of the US declaration of war
The US was involved for 6 years from 1941-1945
The United States became involved in the World War II about March 1941.
Japan
the USSR and the US
Dec 7, '41.