What role did andrew carnegie play in big business

He left the railroad in 1865 to focus on his other business interests, including the Keystone Bridge Company. By the next decade, most of Carnegie's time was dedicated to the steel industry. His business, which became known as the Carnegie Steel Company, revolutionized steel production in the United States.

i need to see the answer to answer the question

he did it to save us from our sins, so we can see him in heaven 1 day. it's because he loves us so much. he used himself as the final sacrifice, so that we could be forgiven for our sins, so that we can see him in heaven, if we believe.