Rochester, New York was a "mill town;" its chief manufacturing output centered around the processing of wheat into flour. Rochester was the first of the inland cities created by the commercialization of agriculture and by the 1820s it was the fastest growing community in the United States. Most of the flour that Rochester milled was shipped via the recently completed Erie Canal to New York City.
The rapid rise of Rochester into a thriving commercial center also coincided with its transformation into the capital of New York's "Burned-Over District."
This video shows how flour mills such as those that lined the streets of Rochester operated.https://youtube.com/watch?v=LWg53NV5ImQ