What effects did rockefeller make on society?

Question: What effects did rockefeller make on society!?

And don't say how he made a gas monopoly!.!.!. I already know thatWww@QuestionHome@Com

Best Answer - Chosen by Asker:

He made the society switch & stick to the energy source he supplies!. He had surely created many job opportunities, doesn't mean he made them all millionaires!. & he had invested a lot of money on research, & spend some money on consuming different products & services!. Www@QuestionHome@Com