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Answer:

It suffered 322,000 casualties including 116,000 soldiers that were killed. The United States didn't become an official member of the Allies, but called itself an "associated power". The U.S. Navy played a major role in helping to blockade Germany, keeping out supplies and hurting Germany economically.

Explanation:

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Answer:

The massive manpower of the United States had overwhelmed German forces.

Explanation:

The Americans had helped push back the Germans after the long stalemate of trench warfare. They had used weapons such as the shotgun to cause massive casualties to German troops. As they pushed back to German borders, Germany had agreed to an armistice, officially ending the war.