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Credit: Linda & Dr. Dick Buscher
The Great Plains are a vast expanse of grass-covered lands found in the central region of North America. They extend over 500,000 square miles (1,300,000 square kilometers) across the states of Colorado, Kansas, Oklahoma, Wyoming, Nebraska, Montana, North Dakota, South Dakota, Texas and New Mexico, as well as the Canadian provinces of Alberta, Manitoba and Saskatchewan. Prior to the 20th century, the region was known as the "High Plains," to differentiate the zone from the "Low Plains" of the Midwest states that are found east of the Mississippi River.