High Quality Content by WIKIPEDIA articles! The Sac and Fox Reservation of the Sac and Fox is a 23.639 sq mi (61.226 km²) tract located in southeastern Richardson County, Nebraska, and northeastern Brown County, Kansas. It was created as a consequence of the Platte Purchase of 1836. The Sac and Fox Nation is the modern political entity encompassing the historical Sac and Meskawki (Fox) nations of Native Americans. There are three federally recognized Sac and Fox tribes: the Sac and Fox Tribe of the Mississippi in Iowa, the Sac and Fox Nation of Missouri in Kansas and Nebraska, and the Sac and Fox Nation in Oklahoma. The tribes were always closely allied and speak very similar Algonquian languages, sometimes considered two dialects, instead of two languages. The Sac call themselves Asakiwaki (or Osakiwug) which means "people of the yellow earth" while the Fox call themselves Meskwaki meaning "people of the red earth".