This is cotton gin from the colonial history. In 1794, U.S.-born inventor Eli Whitney patented the cotton gin, a machine that revolutionized the production of cotton. Mostly by greatly speeding up the process of removing seeds from cotton fiber. For his work, he is credited as a pioneer of American manufacturing.
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The Australian History Series has been written for students living in #Australia who are studying History in Kindergarten/Pre-Primary through to Year 7. - See more at: http://www.teachersuperstore.com.au/product/australian-curriculum/australian-history-series/