Caddoan
5 languages
Caddoan is a language family of 5 languages; the most are spoken in United States.
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The Caddoan languages are a family of languages native to the Great Plains spoken by tribal groups of the central United States, from present-day North Dakota south to Oklahoma. There are only 2 currently spoken languages, as the number of speakers for this family has declined markedly due to European colonization, lack of institutional support, and other factors.
From Wikipedia · Caddoan languages · CC BY-SA 4.0