Physical Description of North and South America
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They are relatively geologically young (about 70 million years) and formed as a result of sedimentation of eroded rocky materials washed out from the Appalachian Mountains, the Central lowlands and the Great Plains.... he second region is the Appalachian Highlands.... This region is by-product of Appalachian mountain ranges, which was a creation of the collision of the North American continent with Europe and Africa.... These are the Great Plain, which stretches from the Gulf of Mexico to the Canadian Arctic; the geologically young, mountainous west, including the Rocky Mountains, the Great Basin, California and Alaska; the raised but relatively flat plateau of the Canadian Shield in the northeast; and the varied eastern region, which includes the Appalachian Mountains, the coastal plain along the Atlantic seaboard, and the Florida peninsula....