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History 22 Online
OpenStudy (anonymous):

cant find info... What new innovations changed life in the United States between 1776 and 1870

OpenStudy (chrisneedshelp):

the cotton gin, the railroad, the reaper by McCormick, the printing press, the invention of weapons, such as the gatling gun, steamboats, underwater vessels, and the invention of the telegraph :) oh and the morse code

OpenStudy (anonymous):

thanks

OpenStudy (chrisneedshelp):

np, good luck and thank you

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