Claim: Aukštaitian, part of the Indo-European language family and native to Lithuania (a country in the Baltic region of Europe), is spoken in Aukštaitija, Dzūkija and Suvalkija.
Evidence: Indo-European Lithuania Aukštaitija, Dzūkija and Suvalkija Lithuania (/ˌlɪθjuˈeɪniə/ (listen) LITH-ew-AY-nee-ə; Lithuanian: Lietuva [lʲɪɛtʊˈvɐ), officially the Republic of Lithuania (Lithuanian: Lietuvos Respublika), is a country in the Baltic region of Europe. 
Aukštaitian (Lithuanian: Aukštaičių tarmė) is one of the dialects of the Lithuanian language, spoken in ethnographic regions of Aukštaitija, Dzūkija and Suvalkija. Indo-European Lithuania Lithuania (/ˌlɪθjuˈeɪniə/ (listen) LITH-ew-AY-nee-ə; Lithuanian: Lietuva [lʲɪɛtʊˈvɐ), officially the Republic of Lithuania (Lithuanian: Lietuvos Respublika), is a country in the Baltic region of Europe.