Oklahoma is also known as the "Sooner State" and was the 46th state to join the United States of America on November 16, 1907. Being inhabited for over 11,000 years, Oklahoma today is the 20th largest state and the 28th most populous. The state borders Kansas, Colorado, Arkansas, Texas, New Mexico, and Missouri. However, Oklahoma has a unique history, and here are 15 amazing facts you should know! #TheFactSite #Facts #USA #UnitedStates #Oklahoma