Claim: Aukštaitian is spoken in Aukštaitija, Dzūkija and Suvalkija; and is native to Lithuania and its language family is Indo-European.
Evidence: Aukštaitian (Lithuanian: Aukštaičių tarmė) is one of the dialects of the Lithuanian language, spoken in ethnographic regions of Aukštaitija, Dzūkija and Suvalkija. Lithuania Indo-European 
Lithuania Aukštaitija, Dzūkija and Suvalkija Indo-European