In what way did the united states contribute to end world war i (check all that apply):
-they supplied the allies with weapons.
-the peace treaty, authored by representatives of the united states, was signed by austria-hungary and germany and immediately ended the war.
-prior to the war, u. s. forces trained france and russian troops to prepare for potential confrontations.
-u. s. troops aided the allied powers on the battlefield.
-u. s. citizens gave up food or gas to in the war effort.