What is a natural boundary that separates the piedmont region from the coastal plain region the final on the Appalachian mountains that OK for now this one or the shark line?

Answer 1

One natural boundary that separates the Piedmont region from the Coastal Plain region is the Fall Line. The Fall Line is a region where the elevation drops significantly, resulting in waterfalls and rapids in rivers and streams. It marks the transition between the harder, rocky terrain of the Piedmont and the softer, more flat and sandy terrain of the Coastal Plain.