Answer: Answer Below.
Explanation:
The increasing affordability of steel accelerated the already growing industrial sector. In this way, Carnegie was also influential in the boom of skyscrapers and bridges built at the turn of the century. Carnegie Steel was sold in 1901 to John Pierpont Morgan for $480 million.
Andrew Carnegie made his fortune in steel at such factories as the Carnegie Steel Works located in Youngstown, Ohio, where new technologies allowed the strong metal to be used in far more applications than ever before.