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what was the cotton gin? how did it have a negative impact rather than positive?
· define interchangeable parts and an assembly line. what were the purposes of these new

A cotton grid is a machine that quickly separates cotton fibers from there seeds. The negative impact was that the rate of slaves increased and the number of slave states increased as well. Interchangeable parts are parts inside of a product that can be replaced piece by piece, without having to replace the entire product. Assembly line is when you have all the workers rounded up in a row, and they all repeatedly do the same job the entire time. The purpose of this was to save time.

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during world war ii, the united states officially had no propaganda, but the roosevelt government used means to circumvent this official line. one such propaganda tool was the publicly owned but government-funded writers' war board (wwb).

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