In what way did the United States contribute to end world war 1 all that apply

-The peace treaty, authored by representatives of the United States, was signed by Austria-Hungary and Germany and immediately ended the war. ... -U.S. troops aided the Allied Powers on the battlefield. -U.S. citizens gave up food or gas to help in the war effort.Jun 21, 2017

Explanation:

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companies sell stock to their businesses grow and become "public"

one of the negative side effects were the economic losses the events of september 11th caused. many, many people lost their jobs as a result of a downturn in the economy after the terrorist attacks.