13 h 25 m, 27 nov 1793 ano - the cotton gin

Descrição:

The cotton gin spun cotton and got all of the seeds out of it instead of people taking hours to take the seeds out with there hands.

Cotton gin. Image. Britannica School, Encyclopædia Britannica, 1 Nov. 2017. school.eb.com/levels/middle/assembly/view/215303. Accessed 19 Jan. 2018.

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