Six Nations Polytechnic in Ohsweken, Ontario offers Ogwehoweh language Diploma and Degree Programs in Mohawk or Cayuga.
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In the 19th century, Robert Latham suggested that the Siouan languages are related to the Caddoan and Iroquoian languages.
Unusually, he carried out fieldwork across a wide range of languages across several continents, including Irish, Basque, Siouan languages, Algonquian languages, Iroquoian languages, the Central American language Kuna and the South American language of Choco and Wayuu and Australian Aboriginal languages.