What effect did the entrance of the US have on 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.

The correct answer for the question is option  > > > d< < <   worked together to keep control of the us in the hands of the wealthy.i hope this answer you guy