What did Andrew carniege invent?

Answer 1

Andrew Carnegie did not invent a specific product but was a prominent industrialist and philanthropist who played a crucial role in the expansion of the American steel industry in the late 19th century. He is best known for founding the Carnegie Steel Company, which revolutionized steel production through innovative techniques and processes, such as the use of the Bessemer process. His efforts significantly contributed to the industrialization of the United States and laid the foundation for modern infrastructure. Carnegie was also a major advocate for philanthropy, donating much of his wealth to educational and cultural institutions.