What did Andrew Carnegie do that was so important?

Answer 1

He was the inventor of steel in the the late 19th century, he was a great philanthropist during his era and used the method called vertical integration. His industry grew as years went on during his time.

Answer 2

Andrew Carnegie was a powerful industrialist who led the expansion of the American steel industry in the late 19th century. He played a key role in the growth of the U.S. economy and became one of the wealthiest individuals in history. Carnegie also dedicated a significant portion of his wealth to philanthropic efforts, establishing libraries, schools, and other institutions to support education and the arts.

Answer 3

He built libraries, donated money for a better education, made good and efficient steel, and made his own money, instead of inheriting it.

Answer 4

he donated money

Answer 5

Steel mill