Nathaliasmiles
02.11.2020 •
History
How was Rockefeller able to build his monopoly across the oil industry?
O He found newer and cheaper ways to refine oil, increasing his profits.
O He confined his business to Ohio so he could buy all the refineries there,
O He bought up oil refineries, cut costs, and reinvested his profits in other refineries.
He began to sell kerosene as well as oil, expanding his market.
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Ответ:
Explanation:
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