It put it on hold for the duration.
By forming the USO to entertain troops
I am not being facetious: The biggest effect of World War I was World War II.
Southern industry rapidly caught up to industry in the North
The defense industry created employment.
Empires of Industry - 1997 War Planes of World War II was released on: USA: 1998
it has no effect
The shipbuilding did have a good effect on the economy of Seattle and other the other places building ships, submarines, and boats, especially the Higgins boats. The entire country benefit economically from the war industry. It improved the lives of the workers too.
because of britnay spears
If WW2 had car light the Axis would be able to see car and know where to bomb and Britain as we know it would now be decimaited (destroyed).
couse and and effect of first world war
In the USA, World War 1 made a boom on the film industry. Many more people went out to see movies as there was a much bigger appeal. In Europe, however, the impact was the opposite. The war destroyed the industry there.
It helped win the war