14 magg 1793 anni - Cotton gin
Descrizione:
whitney invents the cotton gin that can creat 50 pounds a day to get all the seeds out
http://school.eb.com/levels/middle/assembly/view/215382
Cotton gin. Image. Britannica School, Encyclopædia Britannica, 1 Nov. 2017. school.eb.com/levels/middle/assembly/view/215304. Accessed 19 Jan. 2018.
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