The stock market crash of 1929
The conflict because of the Indian an Americans
Basically, before 1973, the president had more power over the military and had more freedom to command the military as the president wished. This was seen in Vietnam which turned out to be a disaster. It was decided to limit the president's military power, and he would need the consent of congress to whatever operation he planned to do.
summary: limit president's military power
Answer:
C.irrigation is often necessary for farming in dry areas is answer.
Explanation:
I hope it's helpful!