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Andrew Carnegie didn't invent anything. He started a company - The Carnegie Steel Company.
steel
Andrew Carnegie
Andrew Carnegie used the Bessemer process to make steel. This method made steel making both very cheap and very efficient.
So he can have a steel boner
Andrew Carnegie invested on steel
Andrew Carnegie invested on steel
Andrew Carnegie
Andrew Carnegie and then he sold it to J.P. Morgan
Philadelphia, Pennsylvania
New York City Andrew Carnegie was founder of the Carnegie Steel Company which later became U.S. Steel.
Andrew Carnegie didn't invent anything. He started a company - The Carnegie Steel Company.
doing stuff and working
Andrew Carnegie
Steel
steel
Andrew Carnegie was the person who said it and made it happen. He built Pittsburgh's Carnegie Steel Company which later join with Elbert H. Garys federal steel company and a few more smaller steel companies to make U.S Steel