1) PATRIOTISM
Americans fought for their freedom so their motivation was unstoppable.
2) WAR WAS ON OUR TERRITORY
Americans knew the layout of their land.
3) FRENCH
The French helped the Americans with supplies and weapons.
"It increased the capacity of the United States to provide military support to the Allies" is the statement among the following choices given in the question that <span>explains how passage of the Selective Service Act affected World War I. The correct option among all the options that are given in the question is the third option.</span>
Afghanistan became an independent state when Amanullah established an alliance and signed a treaty of friendship with the Soviet Union. Hope this helps if you have any questions please feel free to message me;)