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Show Geographic Division thpP'hdniont Plaln" is n nHme used ln to a vslsn'l,1y of the United States Agnate that part of the Atlantic PulnRF!llln w,lich lles hetween the Ap-t' Ap-t' "'lilfin highland and the low coast-trom coast-trom !" pro',Pr- Tt ls distinguished m tiie intter topographically by be-ipermre be-ipermre rugged and eroded with Per river valleys and geologically Conslstlng of much older nnd hard-trnta. hard-trnta. The change from th hard to the soft and recent formation Is marked hv a definite line of escarpments escarp-ments over which nearly all the Atlantic At-lantic rivers fall In rapids or cataracts, nnd the line Ls known as the "tall line" The Piedmont plain is less defined de-fined In New England than in the southern states. It is narrowest and also approaches closest to the sea In New York and broadens southward, being about 300 miles wide In orth Carolina. |