Advanced Geography . he rivers have worn wide valleys and made fertile floodplains, is rolling or hilly. Thesouthern half of this uplandcountry, like the piedmont beltwhich adjoins it, is famousits cotton crops. Farthernorth, tobacco is a leadingcrop of the uplands and thepiedmont. The soil is alsosuited to the growth ofgrain. In the lower and youngerpart of the coastal plain, wherethe land is flat and little wornthe rivers are sluggish. Large parts of the youngercoastal plain are coveredwith forests of pine. These j^~-yield turpentine, rosin andlumber. This lower partof the plain is also note
Advanced Geography . he rivers have worn wide valleys and made fertile floodplains, is rolling or hilly. Thesouthern half of this uplandcountry, like the piedmont beltwhich adjoins it, is famousits cotton crops. Farthernorth, tobacco is a leadingcrop of the uplands and thepiedmont. The soil is alsosuited to the growth ofgrain. In the lower and youngerpart of the coastal plain, wherethe land is flat and little wornthe rivers are sluggish. Large parts of the youngercoastal plain are coveredwith forests of pine. These j^~-yield turpentine, rosin andlumber. This lower partof the plain is also noted for its fruitgroves, — oranges in the south andpeaches in the north. Great quantities of earlyvegetables are raised in the younger coastal plainand are shipped mostly to the large northern cities. When the smooth sea-bottom was lifted up to form theAtlantic coastal plain, it made a very regular valleys were worn in the plain, the northern andmiddle portions have partly sunk beneath the sea, drown-. ing the lower parts of the valleys and thus making bayswith excellent harbors. Among these are Xew York,Delaware and Chesapeake bays. Near the heads of thesebays are situated the great ports of New York, Phila-delphia and Baltimore. Several large cities are built on the rivers along the line wherethe piedmont belt meets the coastal plain. The rivers are therebroken by falls or rapids that give fine water power. In thenorthern and middle ports of the coastal plain, where the valleyshave been slightly drowned, the larger streams, as far as the falls,are open to vessels from the sea. Richmond, near the lower fallsof the James river, is a good example of this class of cities. In the southern part of the plain, the land slopes sogently under the sea that good harbors are found onlyin the river mouths. Sand bars, built by waves, lie alongthe coast and partly inclose many sounds. Inlets throughthe sand bars are kept open by tidal currents. The best cotton in the world gr
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