None.
Probably 48; Alaska & Hawaii were added in 1959.
No, the United States and Japan were not allies. Japan attacked Pearl Harbor, and that is the reason the United States entered the war.
You may be referring to a deceleration of war, other than that nothing i can think of
50,0000
Japan attacked the US in 4 ways during WWII. First, Japan bombed Pearl Harbor in Hawaii on December 7, 1941. 2,403 Americans and 55 Japanese died. Secondly, Japan bombed a US Naval Base in Oregon in...