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John D, Rockefeller borrowed some money from his partners to start up standard oil. He was the founder if the standard oil. His oil controlled 90% of the United States pipelines and refineries. At the time kerosene was getting a bad name. So he opened more refineries. Near the end of his life he had been broken up into 30 different companies.
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Thomas Edison began his research in 1878. He didn't get his patent until later that year. Through out his life time Edison worked on many improvements to what we know today as the light bulb. The use of the light bulb became easy and cheap to use. And much safer than any gas or oil lamps.
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