The rise of historical pre-Islamic Malay kingdoms and later Islamic sultanates assimilated and Malayalised most of the historical Orang Asli people into their community, thus becoming the ancient ancestors of many present-day Malay people.
Other Orang Asli groups opted to retreat further inland to avoid contact with outsiders.
Two administrative initiatives were introduced to highlight the importance of the Orang Asli, as well to protect their identity.
The Department of Aborigines was established in 1950, and the Aboriginal Peoples Ordinance was enacted in 1954.
These are further divided into the Jahaic languages (North Aslian), Senoic languages, Semelaic languages (South Aslian), and Jah Hut.