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Wed, 09/12/2012 - 03:14

The era of the American independent, professional inventor extended from the end of the Civil War to the beginning of the First World War—almost half a century. During this short period the United States became the world’s industrial leader, supplanting the United Kingdom, which had belittled the industry and technology of its former colony. Between 1880 and 1915 the United States moved ahead in the production of coal, pig iron and steel, heavy chemicals, electrical machinery, and electrical light and power.

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