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How John d Rockefeller dominated the oil industry by ?

User Valo
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In 1865, Rockefeller borrowed money to buy out some of his partners and take control of the refinery, which had become the largest in Cleveland. Standard Oil gained a monopoly in the Oil industry by buying rival refineries and developing companies for distributing and marketing its products around the globe.
User Shady Xu
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Answer:

He formed the Standard Oil Trust

Step-by-step explanation:

User Tovah
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