<em>A. It required men from ages 21-30 to register for the military draft.</em>
Explanation:
The Selective Service Act required men from ages of 21-30 to register for the military draft. This act was passed in 1917 and was created to get soldiers for the war effort. This was also the first peacetime draft that the United States has ever had.
As you may know, World War I was happening in 1917. The United States had joined World War I late, just a year before it ended. About a month after the United States had joined the war, the Selective Service Act was passed. This was to ensure that the United States had enough soldiers to fight if needed.
Before World War I happened, the United States did not have a big military compared to other countries. When problems started to arise and the United States finally joined World War I, the military started to expand and even the draft was created.
