what region seperates piedmont and coastal

Answer 1

The region that separates the Piedmont from the Coastal Plain in the eastern United States is known as the Fall Line. The Fall Line is characterized by a transition from the upland areas of the Piedmont, with its rolling hills and higher elevation, down to the flatter, lower-lying areas of the Coastal Plain. This geographic boundary often marks a change in topography, geology, and hydrology, and is historically significant as a site for the development of cities and industries due to the waterfalls and rapids found there, which were used for water power and transport.