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…showed last 75 words of 319 total…that is still used today. Putting your money in stocks and investments was also a smart tactic used by Rockefeller. So you see all the money that Carnegie and Rockefeller made and then putting their money into investments and stocks to make more money, the idea of mass production by use of machines, and pure domination of the competition is what helped make such a dramatic transformation in the United States during the 19th century.