Publicación, Masalah 214

activity addition agricultural American Basin become Belt boundaries California cattle centers Central chief cities Coast coastal Coastal Plain Colorado completely considered continue corn cotton Cotton Belt crops cultural deposits District early economic farms field Figure fish forests fruits GEOGRAFIA geographic regions gold growing important increase industry intensive iron and steel irrigation Island Lake land lines located major manufacturing Manufacturing Belt metallic Michigan mills minerals mining natural North northern note on Figure numerous occupied Pacific period petroleum Piedmont placed Plains plants Plateau population Port possible Preço present production Prof railroads ranching range recent region remained resort result River rocks Rocky Mountains salt SCALE OF MILES season settlement soils South Southern streams subregion Subtropical summer supply terrain Texas throughout timber tourist transportation types United upland Valley vast Willamette Valley winter