Athabaskan languages

Athabaskan or Athabascan (also Athapascan or Athapaskan) is the name of a large group of closely related Native American peoples, also known as the Athabasca Indians or Athapaskes, located in two main Southern and Northern groups in western North America, and of their language family. The Athabaskan family is the second largest family in North America in terms of number of languages and the number of speakers, following the Uto-Aztecan family which extends into Mexico. In terms of territory, only the Algic language family covers a larger area.
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