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activity agri Agricultural Interior American Manufacturing Belt Anglo-America Appalachians Atlantic Coastal Plain Basins and Plateaus Bonneville Dam boundaries Brasil cattle Central Valley cities coastal area Coastal Plain Colorado Columbia Plateau corn Cotton Belt cultural dairy deposits District Dust Bowl economic Fall Line cities farms field fish Foscue fruits fuel minerals geographic regions gold Humid Subtropical Coast important industrial development iron and steel irrigation Island land landscape logging and lumbering major metallic minerals mills mining natural environment natural gas North Pacific Coast Northeastern United northern note on Figure numerous pastures Piedmont Preço production Prof pulp and paper railroads ranching refineries region is considered resort centers River Rocky Mountains salmon salt salt dome San Francisco Bay Santa SCALE OF MILES scenic settlement Sierra Nevada soils Southern California southern Piedmont streams subregion terrain Texas timber tobacco tourist trade types upland Upper Lakes region urban vegetables wheat winter