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Plateau Sign Language
Native to "Canada, "USA
Region "Columbia Plateau
Ethnicity Various "First Nations and Native Americans of the "Columbia Plateau region
"Extinct 18th century
contact "pidgin
Language codes
"ISO 639-3 None (mis)
"Glottolog None
""US & Canada sign-language map (excl. ASL and LSQ).png
  Attested historical range of Plateau Sign Language among other sign languages in the US and Canada (excl. "ASL and "LSQ).

Plateau Sign Language, or Old Plateau Sign Language, is a poorly attested, extinct "sign language historically used across the "Columbian Plateau. The "Crow Nation introduced "Plains Sign Talk, which replaced Plateau Sign Language among the eastern nations that used it (the Coeur d’Alene, Sanpoil, Okanagan, Thompson, Lakes, Shuswap, and Coleville), with western nations["which?] shifting instead to "Chinook Jargon.

Further reading[edit]

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