Before the Tai people's southward migration from Guangxi since the 4th century, the Indochinese peninsula had already been populated by Austronesians who by around 30,000 BP had spread into all sub-regions. They left traces of the first local culture - the Hoabinhian, a name assigned to an industry and cultural continuity of stone tools and flaked cobble artifacts that appears around 10,000 BP in caves and rock shelters first described in Hòa Bình, Vietnam, later also documented in Terengganu, Malaysia, Sumatra, Thailand, Laos, Myanmar, Cambodia and Yunnan, southern China.[1][2]
AustroasiaticMon and Khmer groups, who originate in North-Eastern India predominantly populated the riverine lowlands of Indochina since around 5000 years BP. Austronesian immigrants arrived at the coast of central modern Vietnam around 2500 BP.[3][4][5][6][7][8]
The controversial Two layer hypothesis suggests the immigration of settlers arriving from the Yangtze River valley around 3,000 BP, who introduced wet-rice and millet farming techniques in Mainland Southeast Asia.[9]
The site of Ban Chiang in North-eastern Thailand currently ranks as the earliest known center of copper and bronze production in Southeast Asia and has been dated to around 2,000 years BCE.[10]
The oldest known records of a political entity in Indochina are attributed to Funan - centered in the Mekong Delta and comprising territories inside modern day Thailand.[11] Chinese annals confirm Funan's existence as early as the 1st century CE, but archaeological documentation implies an extensive human settlement history since the 4th century BCE.[12] The Langkasuka and Tambralinga kingdoms on the Malay peninsula appear in Chinese texts by the fifth century.
As well as Funan these polities are characterized as fully developed Indianized kingdoms, which after centuries of trade and socio-economic interaction with India had adopted and incorporated elements of Indian culture, religion, statecraft, administration, epigraphy, literature and architecture.[13][14]
The MonDvaravati principalities also appear during the middle of the first millennium in the lower Chao Phraya River valley of modern-day central Thailand.[15] Unlike Funan, Langkasuka and Tambralinga that were situated in the center of the international trade network Dvaravati remained relatively isolated. Although distinct, the sophisticated Mon-Dvaravati culture is based on Hindu cosmology. Its characteristic art style "such as the faceted miter sitting high on the forehead ... the facial features, especially the eyes″ has influenced Thai sculpture to this day.[16]
^Higham, Charles; Higham, Thomas; Ciarla, Roberto; Douka, Katerina; Kijngam, Amphan; Rispoli, Fiorella (10 December 2011). "The Origins of the Bronze Age of Southeast Asia". Journal of World Prehistory. 24 (4): 227–274. doi:10.1007/s10963-011-9054-6. S2CID162300712.