Question

which industrialist was known for his steel empire
○ john d. rockefeller
○ andrew carnegie
○ cornelius vanderbilt
○ j.p. morgan

Explanation:

John D. Rockefeller was known for oil, Cornelius Vanderbilt for railroads/steamships, J.P. Morgan for finance and mergers. Andrew Carnegie built a major steel empire in the late 19th century.

Answer:

B. Andrew Carnegie