Water travel within the us caused the creation of canals by 1840, about how many miles of canals exisited in the us

For years, Americans had realized the great benefit that would result in connecting a major city with the Great Lakes and surrounding land. The creation of canals embodied the potential in providing dependable and cheap transportation. By 1840, there were over 4000 miles of canals operating in the US.

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after the french-indian war.