Was john d rockefeller a great industrial pioneer or was he a robber baron

The expression "robber baron" is most likely excessively brutal, making it impossible to appropriately apply to anybody. Be that as it may, because of the fact that anybody merits it, John D. Rockefeller does. The motivation behind why he merits it is that he was heartless in his endeavors to expand the piece of the overall industry held by his organization in the oil business.