How did the united states make contributions to the war effort during world war i?

Deploying troops and supplies

Explanation:

The United States entered the WWI in the 6 of April of 1917 when declared the war to Germany and for this date they started drafting men for the war. 2 years after about 2 million of American soldiers have being deployed in France.  

As the country declare war against Germany the preparation of labor and food became a priority for the government that taught people how to grow food in their own backyards and secure that labor was consistent to have enough supplies.

nothing certain is known about what happened, but it seems that the country declined gradually, perhaps due to bad government, or, more likely, due to a series of bad harvests, which resulted in widespread and recurrent famine.

what are two things that greatly the american economy after the war? the huge buildup of u.s. military the beginning of the korean conflict the creation of the gi bill the marshall plan for nations