Respuesta :
Answer:
In all his businesses, Rockefeller made a profit and used it to expand or buy other businesses.
Explanation: just finished the test
The business practice that Rockefeller used that helped him succeed in his oil monopoly was : In all his businesses, Rockefeller made a profit and used it to expand or buy other businesses.
What is monopoly?
This is a term that is used to refer to a single seller or a producer of a commodity that does not have any close substitute.
Rockefeller was known to be an oil giant. A way that he achieved monopoly was by buying the businesses of all of his competitors.
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