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Steam boats became the first major advances in water transportation
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Canals enabled rivers to be moved and redirected
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The Erie Canal, built across the New York State in 1820's opened the midwest to developement and helped New York City became a world wide trading center
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railroads completed what the canals had begun, tying the United States together economically
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the wide spread of railroads and canals, most western trade went down river to New Orlands
