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John Rockefeller finds a solution for cheap oil to be sold to compaines.
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Typewriter was created
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With the completion of a steel mill in America, a cheaper,stronger steel could now be used buildings, equipment, and transportation
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Alexander Bell created the first telephone
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Henry Frick helped Andrew Carnegie become one of the wealthiest people in America. Contributed to the financial aid of Carnegie's steel. Used his intimidation as a big factor when he made business deals.
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