Causes of US failure in Vietnam include b) The United States supported corrupt leaders in Vietnam and d) Only a few US soldiers fought with honor.
One of the biggest issues of the Vietnamese war was that the United States went in because of anti-communism above all other reasons because of the Truman Doctrine. The South Vietnamese leaders were not well liked and were overall corrupt. The knowledge of this back home created a lot of public tension and actually caused soldiers to feel they weren't fighting for a good cause, or even commit war crimes as seen in the My Lai Massacre. Hope I could help!
The correct answer is water. Since the landscape of this region is mostly desert, Kara Kum and Kyzl Kum, water was the vital source for the civilizations of this region to make settlements and grow crops. Great civilizations of this region were build in the valleys of big river systems.
