Some of the biggest companies that dominated the industrial economy in the 1800’s include Standard Oil Company (John D. Rockefeller), Carnegie Steel (Andrew Carnegie), New York Central Railroad Company (Cornelius Vanderbilt), and the banking house of J.P. Morgan. These corporations dominated every aspect of their respective industries. Standard Oil Company has the world’s largest oil refinery during that time and they control 90% of the country’s oil refining capacity.
Carnegie Steel was the biggest steel manufacturer. New York Central Railroad Company operated the major American railroads that connected the country, and J.P. Morgan Banking House was one of the most powerful banks in the world.