Based on research about john

d. rockefeller, state several specific business practices that rockefeller seems to justify in his comment to his sunday school class?

Those would be for one, Social Darwinism and the second one would be all those monopolies and other trusts that he established. He saw the economic and social climb and big business as the survival of the fittest which was in line with the Social Darwinism. He does not see this as a bad thing but merely as working law of Nature and God.