The New Student's Reference Work/Piedmont Region, The
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Piedmont Region, The, is a part of the Atlantic coastal plain of the United States, lying further inland than the low and level area nearest the ocean, but continuous with it. There is a real geographical difference between the Piedmont region and the coastal plain proper, for the former is higher, more rugged and geologically older and based upon harder strata of rock. There is a falls' line between the Piedmont region and the coastal plain proper, where most of the coastal rivers, in leaving the harder for the softer strata of rock, have worn a series of rapids and precipitous falls. The Piedmont region in the south is from two to three hundred miles broad; but in the north, especially in New York, very narrow.