Oklahoma is a state in the south-central United States of America. With an estimated population of 3,579,212 inhabitants in 2006 and an area of 181,035 km ², and is informally known by the nickname, The Sooner State. Oklahoma became the forty-sixth state to join the Union on November 16, 1907, from Indian Territory. Oklahoma's economy is based on the aviation, energy, telecommunications and biotechnology. The third state in the classification of income per capita and the growth leader in the gross national product. Oklahoma City and Tulsa are the main drivers of the economy, since almost 60% of the state's population in its metropolitan areas.

Oklahoma the state of U.S. has jurisdiction importance being in the administration of education and health. Moreover, its largest universities participate in sporting competitions in the NCAA and the NAIA, while two of his athletic clubs are among the most successful United States. With small mountain ranges, prairies, and forests to the west, most of Oklahoma is situated between the Great Plains of the United States and the Highlands, a region particularly prone to severe weather. More than 25 indigenous languages spoken in America, Oklahoma, more than in any other state. It lies at the confluence of three major cultural regions of United States and historically served as a route for the transport of livestock, a destination for southern settlers and a territory for Native Americans.