If you take this a little further, you get to dependency theory, where the poor remain poor because the rich set the rules to keep them that way- ie. to keep labor costs low.
Here is a section of one of my own papers. The rest of the paper has virtually nothing to do with your area of interest, but in the process of explicating feminist theory’s position as a conflict theory I set up some definitions outlining conflict theory and how it differs from other sociological theory types.
(You could, however, use radical feminist theory as a conflict theory tool for studying poverty in the United States. When I say that the above paper has “virtually nothing to do with” your area of interest, that’s because I’m writing about theory and not its application to particular subject matter, and not because the theory type I’m writing about is not applicable to your subject. In fact, a paper using radical feminist theory instead of Marxist or Weberian conflict theory to analyze poverty in America would probably stand out as an unusual and provocative paper, which, depending on your instructor, could serve you ill or serve you well).