Question

The United States did not supply the Allied cause with:

food, munitions and supplies
a plan for peace
new territory in Austria-Hungary
reinforcement of troops

Answer 1

It might be new territory in Austria-Hungary. The US supplied the Allied cause with food, munitions, supplies, more troops, and a boost in morale. If it's not C, then it's B. 

Answer 2

The correct answer is the following: option c. The United States did not supply the Allied cause with new territory in Austria-Hungary. The United States did not have the power to supply any other country with new territory in Europe as it was not under its sovereignty. What the United States did do to aid the Allies during World War I was to send food, munitions and supplies to their armed forces, to reinforce their troops by sending American soldiers to combat, and ultimately with the presentation of "The Treaty of Versailles" which was a plan for peace in Europe, with President Wilson being one of the main supporters of it.