Mobilian was used from Florida westward as far as Texas to facilitate trade between tribes speaking different languages. European exploring parties, such as that of de Soto, often had Mobilian-speaking guides along as interpreters.
Mobilian is a pidginized form of Choctaw and Chickasaw that also contains elements of Algonquian and colonial languages including English, Spanish, and French. It has a simplified syllable and sound structure and a simplified grammar as compared to Choctaw, its primary parent language.