Final answer:
Robber barons were wealthy industrialists who took advantage of workers by implementing practices such as long working hours, low wages, and poor working conditions.
Step-by-step explanation:
Robber barons, also known as captains of industry, were wealthy industrialists and businessmen who rose to prominence during the late 19th century in the United States. They were often criticized for taking advantage of workers through practices such as long working hours, low wages, and poor working conditions.
An example of a robber baron is John D. Rockefeller, who monopolized the oil industry and paid his workers low wages while amassing great wealth for himself.
These practices were driven by the pursuit of profit and control over markets, often at the expense of workers' rights and well-being.
Learn more about Robber barons and their impact on workers