Question

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 nations 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.

Explanation:

Vertical integration involves controlling different stages of the production - distribution process. Rockefeller's trust controlled oil wells (production), refineries (processing), and distribution networks, which is a classic example of vertical integration. Controlling just refineries is horizontal integration in the refining stage. Purchasing coal plants or iron mines is unrelated to vertical integration in the oil - industry context.

Answer:

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