Ida Tarbell exposed the company named "Standard Oil" as a monopoly.
Ida Tarbell was an American columnist best known for her pioneering insightful announcing that prompted the separation of the Standard Oil Company's monopoly.
Tarbell uncovered unjustifiable practices of the Standard Oil Company, prompting a U.S. Incomparable Court choice to break its monopoly.
In the same way as other youthful columnists of her time, Tarbell had turned out to be worried by the multiplication of monopolies and trusts.