The document discusses improvements to transportation networks in the United States during the 1800s that helped connect regions and markets. Canals allowed for cheaper and faster transport of goods between the eastern US and Great Lakes states compared to wagons. Robert Fulton's steamship invention in 1807 made river travel faster and more affordable upstream. Railroads, which were not limited by existing rivers, further increased connectivity and settlement of western territories beyond what canals and roads could provide.