Oklahoma
Oklahoma was a region located within the interior of the North American continent of Earth. This was a state in the United States of America. The border states were Arkansas, Colorado, Kansas, Missouri, New Mexico, and Texas. Oklahoma City was one of its cities. (; )

In an alternate timeline in which Nazi Germany had invaded the United States, Oklahoma was, as of 1944, controlled by American forces. ()

In 2151, a Klingon courier named Klaang crash landed near the town of Broken Bow, Oklahoma. ()

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Earth subnational entities