Final answer:
Andrew Carnegie is frequently referred to as a 'Captain of Industry' for his contributions to the American steel industry, and a 'Robber Baron' implying his ruthless business practices.
Step-by-step explanation:
Andrew Carnegie is often described by two names, referring to his distinct roles in American society: 'Captain of Industry' and 'Robber Baron'. As a Captain of Industry, he is remembered for his contributions to the expansion of the American steel industry in the late 19th century and he's also known for his philanthropic actions. However, the term 'Robber Baron' refers to his ruthless business tactics and exploitation of labor.
Learn more about Andrew Carnegie