Central Highlands (), Western Highlands () or Midland Highlands () is one of the regions of Vietnam and it is located in southern part of central country ("South Central Region"). It contains the provinces of Đắk Lắk, Đắk Nông, Gia Lai, Kon Tum, and Lâm Đồng. Provinces History The native inhabitants of the Central Highlands (Montagnards, Mountain peoples) are various peoples that mainly belonged to the two major Austronesian (Highland Chamic) and Austroasiatic (Bahnaric) ethnolinguistic families. According to Peng et al. (2010) & Liu et al. (2020), Austronesian Chamic groups were well known of being seafarers with the original homeland of Taiwan, might have migrated to present-day Central Vietnam by sea from Maritime Southeast Asia around ~ 2,500 kya, while were making contact/or possibly absorbed the previously earlier Austroasiatic inhabitants (research shows shared high frequencies of AA-associated ancestry among Vietnam's Austronesian Chamic highlanders than Austronesian Chamic lowlanders which are more related with Taiwanese AN groups). Throughout pre-modern history, the Central Highlands were not under the control of surrounding lowland classical kingdoms, thus much of prehistoric indigenous cultures were preserved. Highlands and mountains acted like barricades that curtailed much of the lowland influences on the Central Highlands people. The region falls into the geographical category described by James C. Scott as terra zomia, a huge mountainous landmass of Mainland Southeast Asia (including Southern China and Northeast India). During the early fifteenth century, the northern part of Central Highlands (around present-day An Khê) had a dubious ruler named Śrī Gajarāja (King of the Elephants) with the title "The great king of the Montagnards of Madhyamagrāma" ("big village"), who was a vassal of Cham king Indravarman VI (r. 1400–1441) in the lowland. Despite geographic barriers, the Cham extensively used the Highlands as their resources backyard to provide medieval commodities. They also built several temples in the Highlands, for example, the temple of Yang Prong (in Đắk Lắk province) constructed by king Simhavarman III (r. 1288–1307). It is evident that Chamic-speaking peoples of the lowlands had engaged direct contacts and trade with the peoples of the Central Highlands for a long time before Vietnamese colonialism, resulting in mutual linguistic borrowings in both colloquial languages and cultural similarities. Ethnic Vietnamese (Kinh) people arrived in the area during their "march to the south" (Nam tiến). The Vietnamese now outnumber the indigenous Degars after state-sponsored settlement directed by both the government of the Republic of Vietnam and