What was Andrew Carnegie notable for during the Industrial Revolution?

Andrew Carnegie is most notable for his role in steel production during the Industrial Revolution. He was a key figure in the expansion of the American steel industry, which was crucial for the country's industrial growth and infrastructure development. Carnegie established the Carnegie Steel Company, which became the largest and most profitable steel company in the world by the late 19th century. His use of innovative production techniques, including the Bessemer process, made steel manufacturing more efficient and cost-effective, contributing to the rise of skyscrapers, railroads, and various other construction projects that defined the era. Carnegie's influence transformed not only the steel industry but also the broader economic landscape, making him a central figure in understanding the Industrial Revolution.