All-Actors: The Intergovernmental (Top-Down or Bottom-Up ...

It allowed produce from Ohio to reach New York City by a continuous stretch of waterways. The completion of the Erie Canal started a canal boom between the 1820s and 1830s. Transportation costs dropped . ... It became the worst slum in America. ... so by 1845 every state had repealed laws that required licenses and education to practice medicine. ................
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