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!
Henry of Portugal, was the patron of many sailing expeditions that explored the West African coast through his explorations,
Answer:
c) both western and Eastern European nations
Explanation:
The answer would be b that's the best one