Dakota people – Wikipedia

The Dakota language is a Mississippi Valley Siouan language, belonging to the greater Siouan-Catawban language family. It is closely related to and mutually intelligible with the Lakota language, and both are also more distantly related to the Stoney and Assiniboine languages. Dakota is written in the Latin script and has a dictionary and grammar.. Eastern Dakota (also known as Santee-Sisseton …

https://en.m.wikipedia.org/wiki/Dakota_people