It started with the National defence act in 1919. Which allowed the school to loan equipment from the military. This also gave them access to military personal. Then the vitalization act of 1964 replaced the active military personal with retired ones. It also added the other branches of the military not just the airforce.
Abraham Lincoln winning the President contributed most to the Civil War. After he won the election, southerners were scared that Lincoln would try to get rid of slavery and change their traditions. Once Abe Lincoln was elected, states started to secede (like South Carolina) from the Union just a couple months later. This secession ultimately lead to the confrontation at Fort Sumter, leading to the start of the Civil War.
The dust bowl was a sever drought caused by fluctuations in ocean temperatures. Other factors that contributed to the affect it had on the Midwest was the dry climate and their use of poor farming techniques.
The capture of Iwo Jima and the firebombing of Tokyo. b.) The U.S. concession that he would remain in power and the fear of the atomic bomb.
C because the president is controlled by the peapol. Hope this helps