The
Tai migration from the northern mountains into
Thailand and
Laos was a slow process, with the Tai generally remaining near the mountainous area in the region, where they were able to use their specialized agricultural knowledge relating to the use of mountain water for rice production. The earliest Tai settlements in Thailand were in the river valleys in the northern reaches of the country. Eventually, the Tai settled the central plains of Thailand (which were covered with dense rainforest) and displaced and inter-bred with the pre-existing
Austroasiatic population. The languages and culture of the Tai eventually came to dominate the regions of both modern-day Laos and Thailand. In more recent times, many of the Tai tribes of Laos also migrated west across the border, establishing communities in Thailand. The Laotian Tai ethnic groups, often referred to as the
Lao, are largely clustered in the
Isan region of Thailand.
Origin of the Tai peoples Comparative linguistic research seems to indicate that the Tai peoples were a
Proto-Tai–Kadai speaking culture of southern China and dispersed into mainland Southeast Asia. Many linguists propose that the Tai–Kadai peoples may be genetically connected with
Proto-Austronesian speaking peoples. Laurent Sagart (2004) hypothesized that the Tai–Kadai peoples migrated from a homeland on the island of
Taiwan, where they spoke a dialect of Proto-Austronesian or one of its descendant languages. The ancestors of the modern Tai-Kadai peoples sailed west to mainland China and possibly traveled along the
Pearl River, where their language greatly changed from other
Austronesian languages under the influence of
Sino-Tibetan and
Hmong–Mien language infusion. Aside from linguistic evidence, the connection between Austronesian and Tai-Kadai can also be found in some common cultural practices. Roger Blench (2008) demonstrates that
dental evulsion,
face tattooing,
teeth blackening and
snake cults are shared between the
Taiwanese Austronesians and the Tai-Kadai peoples of Southern China. James R. Chamberlain (2016) proposes that the Tai-Kadai (Kra-Dai) language family was formed as early as the 12th century BCE in the middle of the
Yangtze basin, coinciding roughly with the establishment of the
Chu state and the beginning of the
Zhou dynasty. Following the southward migrations of
Kra and
Hlai (Rei/Li) peoples around the 8th century BCE, the Yue (Be-Tai people) started to break away and move to the east coast in the present-day
Zhejiang province, in the 6th century BCE, forming the state of Yue and conquering the state of Wu shortly thereafter. According to Chamberlain, Yue people (Be-Tai) began to migrate southwards along the east coast of China to what are now Guangxi, Guizhou and northern Vietnam, after Yue was conquered by Chu around 333 BCE. There the Yue (Be-Tai) formed the
Luo Yue, which moved into
Lingnan and
Annam and then westward into northeastern Laos and
Sip Song Chau Tai, and later became the Central-Southwestern Tai, followed by the
Xi Ou, which became the
Northern Tai). The Tai peoples, from
Guangxi began moving south – and westwards in the first millennium CE, eventually spreading across the whole of mainland Southeast Asia. Based on layers of Chinese
loanwords in proto-
Southwestern Tai and other historical evidence, Pittayawat Pittayaporn (2014) proposes that the southwestward migration of southwestern Tai-speaking tribes from the modern Guangxi to the mainland of Southeast Asia must have taken place sometime between the 8th–10th centuries. Tai speaking tribes migrated southwestward along the rivers and over the lower passes into Southeast Asia, perhaps prompted by the Chinese expansion and suppression.
Tai ethnic fusion Over the centuries, the Tai intermarried and absorbed many of the other populations who co-inhabited and/or politically occupied the region, particularly populations of
Mon–
Khmer,
Burmese, and
Chinese descent. This fusion of ethnicity has led to considerable genetic diversity in the modern
Thai people, and has resulted in a Tai population that differs in culture, language, and apparel from the
Tai ethnic groups who remained in China. Many of the individual Tai ethnic groups have assumed a common
Thai identity and have adopted Thai cultural norms.
Individual Tai ethnic groups in Thailand There are presently more than 30 distinct Tai ethnic groups in Thailand, contributing nearly 85 percent of the nation's population. The genetic stratification of the ethnic
clades of the Tai ethnicity is an ongoing topic of debate among linguists and other social scientists. ==Continuous diverse Chinese immigration from the 13th century==