http://en.wikipedia.org/wiki/Steel
http://www.anselm.edu/homepage/dbanach/h-carnegie-steel.htm
People had known how to make steel since ancient times, but many historians claim steel caused a second industrial revolution at the end of the nineteenth century. Name the two innovators and the innovations in the production of steel that triggered the revolution. Explain why steel was a better building material than iron. Describe at least three ways steel changed society.
3 answers
JP Morgon was one and either Rockefeller or Carneige was the other
Hugh