Study GuideU.S. History I–Economic Growth and Development1815–18601. Growth of ManufacturingDuring the first half of the 1800s,American industry grew rapidly. Severaltariffs passed byCongress (1816–1828)helped protect U.S. manufacturers, especially textile mills, from foreigncompetition.As manufacturing shifted from small workshops and homes tofactories, the labor force changed:•Artisans and skilled craftsmenbecame less important.•Factories relied more onsemi-skilled or unskilled workers, includingwomen, to operatemachines.•Technologyboosted production and efficiency, just as it had in agriculture.Some factory production even focused onagricultural inventions, like the reaper and the steel plow,which became important parts of the industrial economy.1.1Technological Innovation•Cotton mills:Machines to spin cotton into thread were first developed inBritain, but theirdesigns were secret. SamuelSlatermemorized the plans and brought them to the U.S.,opening thefirst American cotton mill in Rhode Island (1790).•Interchangeable parts:Eli Whitney, famous for the cotton gin, developed machines thatcould make identical parts. This innovation lowered labor costs and increased efficiency.•Other inventions:oCharles Goodyear (1839)–vulcanization, making rubber stronger.oElias Howe (1846)–sewing machine, later improved by Isaac Singer.oSamuel Morse (1844)–electric telegraph, revolutionizing communication.Thetelegraphtransformed journalism, helping newspapers spread quickly. Daily newspapers in theU.S. grew from8 in 1790 to nearly 400 by 1860, many costing only a penny.Preview Mode
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