which of these men created a monopoly in the steel industry?\njohn d. rockefeller\nhenry ford\nandrew…

which of these men created a monopoly in the steel industry?\njohn d. rockefeller\nhenry ford\nandrew carnegie\nj. p. morgan
Answer
Brief Explanations:
Andrew Carnegie built a large - scale steel business and had significant control over the steel industry, creating a near - monopoly. John D. Rockefeller was in oil, Henry Ford in automobiles, and J. P. Morgan was a financier with interests in multiple industries but not known for a steel monopoly.
Answer:
Andrew Carnegie