<span>provide free labor and therefore an economic advantage to slaveholding states. let white men build businesses rather than work on the farm</span>
Slavery was more profitable as it provides free labor for the slave-holding states. The expansion of territories was an opportunity for the farm holder as it would boom their production with cheap labor cost. Instead of working themselves they can maintain their superior position and slave served the purpose of cheap labor at the newly acquired territory.
Carnegie used his money to build libraries both in the U.S.
as well as other countries so that people would benefit from others in terms of
knowledge. He also helped establish
schools so that more people will have access to education.