What effect if any did americas entry into world war i have on the outcome of the war?

The entry of the United States was the turning point of the war, because it made the eventual defeat of Germany possible. It had been foreseen in 1916 that if the United States went to war, the Allies' military effort against Germany would be upheld by U.S. supplies and by enormous extensions of credit.

federal power is further limited with a system of checks and balances that gives each branch of government a measure of power over the others.

explanation:

mass production/ assembly line production