The United States government vowed to spend whatever was necessary to sustain the war effort. Federal spending increased from $8.9 billion a year in 1939 to $95.2 billion in 1945. The Gross National...
The US like the other Allies did not leave the war and pursued it until its end. In May of 1945 the Nazis surrended to the US and their allies, therefore ending their involvment.
The United States took a somewhat neutral stance during World War II, although they tended to side more with the British and French. The Japanese attacked Pearl Harbor on December 7, 1941, therefore...