How was Rockefeller able to become so successful in the oil business? A. He was the only one to use railroads for shipping his oil. B. He set about forcing competitors to sell out to him. C. Since he had so much money, he would underbid other companies. D. He knew where all the best oil fields could be found.
B. He set about forcing competitors to sell out to him He bought out his competitors, created companies that will market, distribute all products around the whole world. becoming the ultimate monopoly in the oil business.
