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The War of 1812 led to the development of more roads and canals, starting from the late 1810s and early 1820s. How did this development lead to other developments like a market economy, fluidity in time and geography, smaller family sizes, literacy, manifest destiny, and a rising middle class?  Essentially, I am asking you to explain how all of these flowed from the development of roads and canals.  The title of your essay should be, “How canals and roads changed culture in the United States.”