Which of the following men created a monopoly in the oil industry? andrew carnegie j. p. morgan john d. rockefeller henry ford

John D. Rockefeller

Explanation: Look up His name and how he made his money!

- three-quarters or two-thirds..

- "the constitution provides that an amendment may be proposed either by the congress with a two-thirds majority vote in both the house of representatives and the senate or by a constitutional convention called for by two-thirds of the state legislatures."

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the answer is a. since they were a huge producer of cotton and wanted the most money for it.