Siouan languages
Siouan languages can be grouped into the Western Siouan languages and Catawban languages. The Western Siouan languages can be divided into Missouri River languages (such as Crow and Hidatsa), Mandan, Mississippi River languages (such as Dakotan, Chiwere-Winnebago, and Dhegihan languages), and Ohio Valley Siouan branches. The Catawban languages consist only of Catawban and Woccon.
Demographics of Laos
The official and dominant language is Lao, a tonal language of the Tai linguistic group. Midslope and highland Lao speak tribal languages. French, once common in government and commerce, has declined in use, while knowledge of English — the language of the Association of Southeast Asian Nations (ASEAN) — has increased in recent years.