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.
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I believe it’s the first one
Although historians often speak of a “Populist movement” in the 1880s, it wasn't until 1892 that the People's or Populist Party was formally organized. The Omaha Platform, adopted by the founding convention of the party on July 4, 1892, set out the basic tenets of the Populist movement.
It’s a because they have limited control
Im not sure if this is correct but it sounds like they would go and hunt things and bring it back . Im not sure . Hope this helps