1 point By 1870 Standard Oil Company, owned by John D. Rockefeller, owned
nearly all of the oil refineries in the United States. This is an example of
a corporation
a private business
vertical integration
horizontal integration

Option: a corporation

Explanation:

John D. Rockefeller was one of the famous entrepreneurs and rich men in America to own a larger company. Rockefeller owned Standard Oil Company which included all of the refineries in the United States.

The company was an American oil- refining, transporting, and producing. It's established by John D. Rockefeller in 1870 as a corporation.