The number Sip Song is Tai language for twelve, as with Thai "twelve". A parallel etymology with the number twelve can also be found in the place name Sip Song Panna. Chau is land and Tai.
Early history
have settled in the northwestern parts of what now is Vietnam since the early first millennium CE or, at the latest, the 5th to 8th century. They mainly settled along the Black River'. One Black Tai chiefdom—located at the place today known as Điện Biên Phủ—was named Muang Thaeng, just like the legendary kingdom of Khun Borom, protagonist of a Tai creation myth and believed to be the progenitor of the Lao, Thai, Shan and other Tai peoples, who later spread to the territories of modern Laos, Thailand, Burma, northeast India and the south of China's Yunnan province. Like in other Tai societies, the core social units of the Tai Dam, Tai Dón and Tai Daeng were the village' and the chiefdom, each consisting of several villages and ruled by a feudal lord . Their base of life was wet rice cultivation, which is why the Tai settled in valleys alongside the course of rivers. A number of these mueang, situated in the modern-day provinces of Điện Biên, Lai Châu, Sơn La as well as western parts of Lào Cai and Yên Bái grouped together and formed a long-term alliance, called Sip Song Chau Tai. Usually one of the lords was considered senior to the others, but each of them maintained the power over his chiefdom. The alliance has been formalized since at least the 17th century, but the chiefdoms never merged into one homogenous state. The number of mueangs belonging to the confederation altered during the course of time, but the number "twelve" was kept in the name for symbolic reasons. In premodern Southeast Asia's complex political geography, Sip Song Chau Tai lay at the intersection of several larger mandalas : At different times, it had to pay tribute to China, Vietnam, Lan Xang/Luang Phrabang and/or Siam. Nevertheless, the Tai chiefdoms always maintained their autonomy in internal affairs.
French Indochina
Even though the upland Tai had stronger ethnic and cultural ties to Laos, Sip Song Chau Tai was incorporated into the French protectorate of Tonkin—and therefore French Indochina—after 1888. This was arranged by the French explorer and colonial representative Auguste Pavie who signed a treaty with Đèo Văn Trị, the White Tai lord of Muang Lay on 7 April 1889. Thereby the Sip Song Chau Tai accepted the French overlordship, while the colonial power promised to respect the positions of the Tai lords and their autonomy in internal affairs. At that time the 12 principalities were:
Following Đèo Văn Trị's death, leadership of the White Tai passed to his third son Đèo Văn Long, passing over the second son. After the Japanese coup of 1945, Đèo Văn Long fled Lai Chau with retreating French units. On his return, with the assistance of a Eurasian agricultural official named Louis Bordier, Đèo Văn Long was reestablished, and the French agreed to honor the terms of Pavie's 1889 agreement with Long's father. Bordier married Long's daughter and as his son-in-law proceeded to direct military operations of the White Tai against the Black Tai at Son La who supported the Viet Minh. Several Tai companies fought alongside the French in the First Indochina War, against both the communist Viet Minh and the nationalist Việt Nam Quốc Dân Đảng, probably motivated by their distrust vis-à-vis the lowland Vietnamese and their wish to retain the autonomy they enjoyed under the French.
Tai Federation
In 1948, the French colonial administration declared the Tai Federation to be an independent component of the French Union. It had its own flag, constitution and parliament. Đèo Văn Long was appointed president for life and Lai Châu was chosen as the capital. The Tai Federation was however not only populated by Tai peoples, but also other "hill tribes" , including Hmong, Yao, Yi and Khmu. They were labeled as "sub-minorities" and treated inferior to the Tais. Đèo Văn Long monopolized all the state power in his person and family, as well as the opium trade. In 1950, the Tai Federation was made a crown domain of the French-installed Vietnamese emperor Bảo Đại, but not an integrated part of the State of Vietnam. Bảo Đại refrained from delegating a governor to Lai Châu, but rather left the power in the hands of Đèo Văn Long and the Tai lords. The emperor visited his domain only once, in 1952. Many of the subjugated groups supported the Viet Minh on their advance to the Northwest starting in 1952. There were also rising tensions between the different Tai groups and their lords. Đèo Văn Long had simply dismissed the Black Tai lord of Muang Thaeng, Lò Văn Hặc, and replaced him by his own son. The disempowered chief and many members of his tribe joined forces with the Viet Minh to both seek retaliation against the Đèo family and to dislodge the dominance of the White Tai. Following the death of Đèo Văn Long's oldest son, his third son Deo Van Un took command of 4,000 White Tai partisans, but was killed at the Battle of Dien Bien Phu of March to May 1954. This was a decisive battle of the Indochina War and sealed the defeat of the French. Đèo Văn Long was evacuated by helicopter to Hanoi, then departed to Laos and finally went into exile in France. The Geneva Agreements of July 1954 awarded the whole of North Vietnam to the communist-led Democratic Republic and dissolved the autonomous Tai Federation, marking the end of the centuries-old rule of the feudal lords. Thousands of Tais left their native land and emigrated to France, Australia and the United States.
In order to avoid ethnic tensions, the DRV designated its northwestern provinces of Lai Châu, Sơn La and Nghĩa Lộ as the "Tai-Meo Autonomous Region", modeled on the national autonomies of communist China. It was renamed the "Northwest Autonomous Region" in 1961, in order to not highlight just two of the many ethnic groups in this zone. The autonomy was rescinded after the Vietnamese reunification of 1975. Following Đèo Văn Long's death in 1975, his title and position among the exile community of the "Pays Taï" passed to his daughter Deo Nang Toï, who has lived in Paris until her death in 2008.
