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Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,579,212 residents in 2006 and a land area of 68,667 square miles, Oklahoma is the 28th most populous and 20th-largest state. Its name is derived from the Choctaw words okla and humma, meaning "red people", and is known informally by its nickname, The Sooner State. Formed from Indian Territory on November 16, 1907, Oklahoma was the 46th state to enter the union. Its citizens are known known as Oklahomans, and the state's capital and largest city is Oklahoma City.
In descending order of population, Oklahoma's largest cities in 2007 were: Oklahoma City, Tulsa, Norman, Broken Arrow, Lawton, Edmond, Midwest City, Moore, Enid, and Stillwater.
The Great Seal of Oklahoma is a five-pointed star in a circle. The center of the star contains the Seal of the Territory of Oklahoma. The five rays hold the seals of the Five Civilized Tribes: Cherokee, Chickasaw, Choctaw, Creek, and Seminole.
