In the 19th century, the federal government played a significant role in building transportation networks, particularly in the form of canals and railroads. The government recognized the importance of these networks for economic growth and national unity, and thus funded many infrastructure projects through land grants, loans, and subsidies.
For example, the federal government provided large land grants to railroad companies, which helped to spur the construction of the transcontinental railroad. The government also provided funding for the construction of canals, including the Erie Canal, which greatly facilitated trade and commerce between regions of the country.
Overall, the federal government supported the development of transportation networks as a means of connecting the various regions of the country and promoting economic growth.