The Great Plains is a large space of level land in the middle and western parts of Canada and the United States. The western boundary is the Rocky Mountains. In the east, the Great Plains end where there is enough rain to support many trees.
Other websites[change | change source]
- North Dakota State University: The Geologic Story of The Great Plains
- Kansas Heritage Group: Native Prairie, Preseve, Flowers, and Research
- Library of Congress: Great Plains
- University of Nebraska-Lincoln: The Great Plains Study