What did john d. rockefeller do to establish standard oil as a monopoly?
question 15 options:

a. invested in banks

b. set up a trust

c. kept discovering oil

d. bought stock options
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The correct answer is D) bought stock options.

What Rockefeller did to establish the standard oil as a monopoly was to buy stock options from other smaller companies until he became the only owner of most of the oil companies in America.

John D. Rockefeller (1839-1937) founded the Standard Oil Company in 1870. After a decade, Standard Oil controlled 90 percent of the oil in the United States. He bought companies that were competitors or that were part of the oil supply chain and created a monopoly. That is why in 1911, the Supreme Court of the United States ordered the dissolution of the company because it violated antitrust laws.

1 question answer

Hunter and Gatherers They followed herds of animals and gathered food from the earth. Hunters and gatherers of nuts, berries, and other types of food. They follow herds of animals.

2 question answer

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sorry but i don't know the 3 question