He bought out the competition , and he lowered his prices to drive competitors out of business .
He sold oil to the US govt for war time.
Ohio
so that he could become richer.
One method was by buying out competitors. Legally. Another would be preventing rival companies from using the railroads he held a controlling interest in. Which, at the time I believe, was also still legal, as anti-trust laws had yet to be created in the USA. one mehtod he used to build his empire was Horizontal intergration.
John D. Rockefeller was respected for his business acumen and success in building the Standard Oil Company into the largest oil refinery in the world. He was also praised for his philanthropy, including founding the University of Chicago and donating significant sums to various charitable causes.
The oil magnate Rockefeller.
John D. Rockefeller was the founder of the Standard Oil Company.
Rockefeller dominated the oil industry at his time. He bought as much oil refineries as he could.(Monopoly)
The first billionaire in the United States of America is John D. Rockefeller. Rockefeller has an oil company which supplies 90 percent of the worldâ??s oil refinery. Rockefeller resides in New York now.
oil
Oil.
John D. Rockefeller made his fortune in oil. He was the founder of Standard Oil Company and was also a philanthropist.