which of these men created a monopoly in the steel industry?\nj. p. morgan\nandrew carnegie\nhenry…

Brief Explanations:

Andrew Carnegie built a large - scale steel business and had significant control over the steel industry, creating a near - monopoly. J. P. Morgan was more involved in banking and corporate consolidation. Henry Ford was known for revolutionizing the automobile industry. John D. Rockefeller monopolized the oil industry.

Answer:

B. Andrew Carnegie