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James Hargreaves developed the spinning Jenny, a machine that could spin several threads at once which sped up the process of weaving thread into cloth.

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Whitney went to Washington, D.C., to try to sell his idea. At first, officials laughed at his plan. Carefully, Whitney sorted parts for 10 muskets into separate piles. He then asked an official to choose one part from each pile. In minutes, the first musket was assembled. Whitney repeated the process until 10 muskets were complete.

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During the industrial revolution, many people left farms for cities, attracted by the job opportunities to be found in factories. Older cities expanded rapidly, while new cities sprang up around factories.

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Boys in girls as young as 7 worked in factories. Small children were especially useful in textile mills because they could squeeze around the large machines to change spindles.

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Working hours in the mills were long-12 hours a day, 6 days a week. True, farmers also put in long hours. However, farmers worked shorter hours in winter. Mill workers, in contrast, worked nearly the same hours all year round

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Francis Cabot Lowell (MA) found a way to improve on British textile mills by combining spinning and weaving under one roof to make the process easier.

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Joseph Henry, showed that electric current could be sent through a wire over long distances to ring a bell. His work paved the way for later inventions.

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Samuel F. B. Morse received a patent for a "talking wire," or telegraph, in 1844. The telegraph was a device that sent electrical signals along a wire. Morse also devised a code of dots, dashes, and spaces so messages could be sent.

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It was created by Cyrus McCormick, it was a machine that originally used a horse to cut and gather wheat and other grains. The reaper can do the work of five men using hand tools.

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The mechanical drill was used to plant grain, a threshing machine to beat grain from its husk and a horse-drawn hay rake. This machine helped farmers raise more grain with fewer hands.