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The light switch is important because people need to need to operate the light
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It letting you communicate with other people that’s not close to you
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A cotton gin is a machine that quickly and easily separates cotton fibers from their seeds, allowing for much greater productivity than manual cotton separation. ... Seeds may be used to grow more cotton or to produce cottonseed oil.
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Instead of sewing with your hand it's a machine that do it for you.
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loom powered by a line shaft
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spun textile fibers into yarn by an intermittent process
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a large spinning machine and was used when cloth was only made by hand.
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The machine used eight spindles onto which the thread was spun, so by turning a single wheel, the operator could now spin eight threads at once.
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The first crude steam powered machine was built by Thomas Savery, of England, in 1698. Savery built his machine to help pump water out of coal mines.
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It allowed a single weaver to weave much wider fabrics, and it could be mechanized, allowing for automatic machine looms.
