Final answer:
In late nineteenth-century America, a "robber baron" differentiated from other "captains of industry" through their exploitative practices.
Step-by-step explanation:
In late nineteenth-century America, a "robber baron" differentiated from other "captains of industry" through their exploitative practices. While "captains of industry" were known for their new business models, entrepreneurial approaches, and philanthropic efforts that transformed America, "robber barons" prioritized their own profit at the expense of workers and the general public, with little contribution to the nation.