Question

Why was the Selective Service Act an important step toward winning World War I?
It showed the Germans that Americans were serious about entering the war.
It provided the large numbers of troops needed to reinforce the Allied effort.
It led directly to the US entering World War I on the side of the Allies.
It restricted service in the armed forces to men with prior fighting experience.

Answer 1

It provided the large numbers of troops needed to reinforce the Allied effort. The draft allowed the U.S. to rapidly raise a large army (millions of men) to fight in Europe.