Question

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

Explanation:

John D. Rockefeller vertically integrated his oil - related business by creating a trust that controlled oil wells, refineries, and distribution networks. Vertical integration involves controlling different stages of the production and distribution process in an industry. In the oil industry, this meant having control from the extraction (oil wells) to the refining and finally the distribution of the product.

Answer:

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