Answer :
Final answer:
Robber barons of the late 19th century included prominent figures like Rockefeller, Vanderbilt, and Carnegie, who amassed great wealth through monopolistic practices.
Explanation:
William Jennings Bryan is the individual who is not considered a robber baron among the options provided. Robber barons were wealthy entrepreneurs who built huge monopolies through unethical practices like crushing competitors and exploiting consumers. Examples of well-known robber barons include John D. Rockefeller, Cornelius Vanderbilt, and Andrew Carnegie.
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