How did john d. rockefeller vertically integrate his monopoly in 1882? he created a trust that controlled oil wells, refineries, and distribution networks. he created a trust that controlled ninety percent of the nation's oil refineries. he purchased coal plants around the country to add to his business. he purchased iron mines around the country to add to his business.

He created a trust that controlled oil wells, refineries, and distribution networks.

Explanation:

In 1870, John D. Rockefeller organized the Standard Oil Company of Ohio, which produced its own tank cars, pipelines, and even it's own wooden barrel.  Besides, it also controlled ninety per cent of the oil industry in the United States.

Las reformas de los Gracos son una serie de leyes y propuestas hechas en los años 133,123 y 122 a... por los hermanos Tiberio Sempronio Graco y Cayo Sempronio Graco y de Cornelia, de la familia de los Escipiones