They joined the war. When the Japanese attacked Pearl Harbor, they committed an act of war. The US had no other option but to declare war on Japan, and in so doing declare war on Japan's allies, essentially Germany, and Italy. Joining the war, the US injected massive numbers of troops, equipment, and ordnance, as well as food and supplies for Britain and the other Allied Power Nations. Most importantly, the US made available massive industrial and production capabilities.
Battle of Midway
They provided fresh troops
USA
The Battle of Midway.
Allies
Normandy
1918
They provided fresh troops
It was not only US manpower, but US womenpower that helped turn the tide of war. Men went overseas to fight. Others stayed behind and worked on farms or in war factories. To fill the need for workers, women entered the workforce in large numbers. American production of war goods was able to outproduce the other nations, turning the tide in the Allies favor.
it helped turn the tide of the war in favor in the allies direction
the tide of war went against the Germans
1918
1918
USA
1918
The Battle of Midway.
made allanice with the Athens
Gettysburg