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 acquiring or merging with competitors in the same industry. Rockefeller created a trust that controlled a large - portion of the nation's oil refineries in 1882, which is an example of horizontal integration in the oil - refining industry.

Answer:

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