It was added my Thomas Jefferson who wanted to abolish slavery and that all men black white or even tan are created in gods image<span />
I believe it is E. MacArthur.
Andrew carnegie is really famous for creating a monopoly in steel industry in the united states during his era.
So, the type of business practice that andrew carnegie pioneered with carnegie steel corporation would be : controlling the entire market place for a single product in order to set prices
hope this helps