The Great Plains was the broad expanse of flat land, much of it covered in prairie, steppe and grassland, that was located west of the Mississippi River tallgrass prairie states and east of the Rocky Mountains in the United States and Canada. This area covers parts, but not all, of the states of Colorado, Kansas, Montana, Nebraska, New Mexico, North Dakota, Oklahoma, South Dakota, Texas, and Wyoming, and the Canadian provinces of Alberta, Manitoba and Saskatchewan. The region is known for supporting extensive cattle ranching and dry farming.
The Canadian portion of the Plains is known as the Prairies. Some geographers include some territory of northern Mexico in the Plains, but many stop at the Rio Grande.