Great Lakes passenger steamers the lakes grew in size and number, and additional decks were built on the superstructure to allow more capacity. This inexpensive method of adding capacity was adapted from river steamboats and successfully applied to lake-going craft. The Erie Canal opened in 1825, allowing settlers from New England and New York to reach Michigan by water through Albany and Buffalo. This route opening and the incorporation of Chicago in 1837, increased Great Lakes steamboat traffic from Detroit through the straits of Mackinaw to Chicago. The screw propeller was introduced to the Great Lakes by "Vandalia" in 1842 and allowed the building
Chenango Canal in a water highway to what would become the Midwestern United States, connecting to the Great Lakes at Buffalo. It connected the Great Lakes to the Hudson River and then to the port of New York City. The Erie made use of the favorable conditions of New York's unique topography which provided that area with the only break in the Appalachian range—allowing for east-west navigation from the Atlantic coast to the Great Lakes. The canal system gave New York State a competitive advantage, helped New York City develop as an international trade center, and allowed Buffalo to grow from just