Here is the answer of the given question above. The argument that Carnegie makes about the uses to to which the great fortunes of industrialists should be devoted is that he argued that the wealthy must live modestly and make use of their fortunes for the elevation of all civilization. Hope this answer helps.
Carnegie believed that wealthy industrialist had a purpose: to serve society and its advances in order to benefit most people. He believed that great amount of money should be invested in progressive policies in order to become a better society.
