"Batak is a collective term used to identify a number of closely related Austronesian ethnic groups predominantly found in North Sumatra, Indonesia, who speak Batak languages. The term is used to include the Karo, Pakpak, Simalungun, Toba, Angkola, and Mandailing which are related groups with distinct languages and traditional customs (adat)." - (en.wikipedia.org 21.08.2022)
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