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Daniel Boone gathered 30 skilled men to help him clear the way for those traveling west. They moved rocks, cut down trees, and marked it as the Wilderness Trail. This is the road over 100,00 people followed while traveling west.
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Eli Whitney created the cotton gin. This sped up the harvesting of cotton, saving both time and money.
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Francis Cabot Lowell took Slater's mill, which made thread, and improved it so that it could also weave the thread into cloth.
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As people moved west, many people from Kentucky and Tennessee moved to what was known as the Missouri territory. In 1818, they applied for statehood. This sparked a huge debate over whether it should be a slavery or free state.
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After steamboats were invented, a new problem arose. Not many rivers linked the east and west. To solve this problem, Congress began to build the Erie Canal. After eight years of work, it finally opened in October 25, 1825.