Question

how did john d. rockefeller horizontally 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:

Horizontal integration involves combining firms in the same industry. Rockefeller created a trust to control a large - portion of the oil refining industry. Controlling ninety percent of the nation's oil refineries is an example of horizontal integration as it's about dominating one stage (refining) of the oil industry. Creating a trust that controls oil wells, refineries, and distribution networks is vertical integration (covering different stages of production). Purchasing coal plants and iron mines are not related to horizontal integration in the oil industry.

Answer:

He created a trust that controlled ninety percent of the nation's oil refineries.