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  The Steam Engine was made in 1698 it allowed factories to locate anywhere
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  The Canals was made 1776 it led opening ceremonies
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  The Cotton Gin made in 1793 it was easy to pull out a cotton seed fiber people didn't pulling out seeds
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  Interchangeable Parts were made in 1798 it allowed people to make weapons quickly
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  The National Road was made in 1811 it was first federally funded road
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  The Mechanical Reaper was made in 1831 the farmers didn't have to use so farmers didn't have to use their hands anymore
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  The Steel Plow was made in 1837 it allowed farmers to cultivate crops more efficiently