Who was known as the "Steel King" during the Industrial Era? John D. Rockefeller Andrew Carnegie J.P. Morgan Cornelius Vanderbilt None Which industry did John D. Rockefeller dominate during the late 19th century? Steel Oil Railroads Textiles None What was the primary innovation that allowed Andrew Carnegie to revolutionize the steel industry? Bessemer process Steam engine Assembly line Telegraph None How did John D. Rockefeller consolidate control over the oil industry? By forming a trust By enacting antitrust legislation By engaging in hostile takeovers By lobbying the government None What philanthropic initiatives are Andrew Carnegie and John D. Rockefeller known for? Funding public libraries and education Providing healthcare for the poor Supporting environmental conservation Investing in scientific research None Time's up
