1 jan 1793 ano - Eli Whitney invents the cotton gin

Descrição:

Whitney noticed slaves were having difficulties removing seeds from cotton bolls. In his spare time, he made a device to make it quicker and easier to do so. By 1860, cotton became a cash crop. (Src: http://score.rims.k12.ca.us/score_lessons/cotton_gin/pages/reading.html)

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