Explain why the Standard Oil company is an example of horizontal integration.

Standard Oil became a horizontal integration monopoly because it owned ninety percent of US oil refineries. It became a monopoly because it bought almost all of the competitors so that it managed to control almost all oil production, processing, marketing, and transportation in the United States.

legal rights and freedom of speech.i hope that it is correct.

brainliest if correct

after the roman empire, the catholic church began to unify by taking on many duties of a government.