Lan Xang (1354-1707)
Lan Xang (1353-1707) was one of the largest kingdoms in Southeast Asia. Also known as the "Land of a million elephants under the white parasol" the kingdom's name alludes to the power of the kingship and formidable war machine of the early kingdom. The founding of Lan Xang was recorded in 1353, after a series of conquests by Fa Ngum. From 1353-1560 the capital of Lan Xang was Luang Prabang (known alternately as Muang Sua and Xieng Dong Xieng Thong). Under successive kings the kingdom expanded its sphere of influence over an area that now incorporates all of modern Laos, the Sipsong Chu Tai of Vietnam, Sipsong Panna of Southern China, Khorat Plateau region of Thailand, and the Stung Treng region of Northern Cambodia.
Lan Xang existed as a sovereign kingdom for over 350 years. The first serious foreign invasion came from the Dai Viet in 1479, which was defeated, though leaving the capital of Luang Prabang largely destroyed. The first half of the sixteenth century allowed for the power, prestige and cultural influence of the kingdom to be restored under a series of strong kings (see Souvanna Balang, Vixun, Photisarath). In the 1540s a series of succession disputes in the neighboring Kingdom of Lanna, created a regional rivalry between Burma, Ayutthaya and Lan Xang. In 1540 Lan Xang defeated an incursion from Ayutthaya. By 1545 the Kingdom of Lanna was attacked by the Burmese and then Ayutthaya. Lan Xang entered into an alliance with Lanna, and aided in the defense of the kingdom. In 1547 the kingdoms of Lan Xang and Lanna were briefly unified under Photisarath of Lan Xang and his son Setthathirath in Lanna. Setthathirath would go on to become the king of Lan Xang on the death of his father, and become one of the greatest kings of Lan Xang.
The Burmese Toungoo Dynasty began a series of expansions during the late 1550s which culminated under King Bayinnaung. Setthathirath moved the capital of Lan Xang from Luang Prabang to Vientiane in 1560, to better defend against the threat of Burma and to more ably administer the central and southern provinces. Bayinnaung subjugated the Kingdom of Lanna and went on to destroy the kingdom and city of Ayutthaya in 1564. King Setthathirath fought two successful guerilla campaigns against the Burmese invasions, leaving Lan Xang the only independent Tai kingdom until his death in 1572, while on campaign against the Khmer. The Burmese succeeded with the third invasion of Lan Xang around 1573, and Lan Xang became a vassal state until 1591 when the son of Setthathirath, Nokeo Koumane, was able to successfully reassert independence.
Lan Xang recovered and reached the apex of its political and economic power during the seventeenth century under King Sourigna Vongsa, who became the longest reigning of Lan Xang’s monarchs (1637-1694). In the 1640s the first European explorers to leave a detailed account of the kingdom arrived looking to establish trade and secure Christian converts, both were ultimately largely unsuccessful. Upon the death of Sourigna Vongsa a succession dispute erupted and the kingdom of Lan Xang was ultimately divided into constituent kingdoms in 1707.
Regional Kingdoms (1707-1779)
Beginning in 1707 the Lao kingdom of Lan Xang was partitioned into regional kingdoms of Vientiane, Luang Prabang and later Champasak (1713). The Kingdom of Vientiane was the strongest of the three, with Vientiane extending influence across the Khorat Plateau (now part of modern Thailand) and conflicting with the Kingdom of Luang Prabang for control of the Xieng Khouang Plateau (on the border of modern Vietnam).
The Kingdom of Luang Prabang was the first of the regional kingdoms to emerge in 1707, when King Xai Ong Hue of Lan Xang was challenged by Kingkitsarat, the grandson of Sourigna Vongsa. Xai Ong Hue and his family had sought asylum in Vietnam when they were exiled during the reign of Sourigna Vongsa. Xai Ong Hue gained the support of the Vietnamese Emperor Le Duy Hiep in exchange for recognition of Vietnamese suzerainty over Lan Xang. At the head of a Vietnamese army Xai Ong Hue attacked Vientiane and executed King Nantharat another claimant to the throne. In response Sourigna Vongsa’s grandson Kingkitsarat rebelled and moved with his own army from the Sipsong Panna toward Luang Prabang. Kingkitsarat then moved south to challenge Xai Ong Hue in Vientiane. Xai Ong Hue then turned toward the Kingdom of Ayutthaya for support, and an army was dispatched which rather than supporting Xai Ong Hue arbitrated the division between Luang Prabang and Vientiane.
In 1713, the southern Lao nobility continued the rebellion against Xai Ong Hue under Nokasad, a nephew of Sourigna Vongsa, and the Kingdom of Champasak emerged. The Kingdom of Champasak comprised the area south of the Xe Bang River as far as Stung Treng together with the areas of the lower Mun and Chi rivers on the Khorat Plateau. Although less populous than either Luang Prabang or Vientiane, Champasak occupied an important position for regional power and international trade via the Mekong River.
Throughout the 1760s and 1770s the kingdoms of Siam and Burma competed against each other in a bitter armed rivalry, and sought out alliances with the Lao kingdoms to strengthen their relative positions by adding to their own forces and denying them to their enemy. As a result, the use of competing alliances would further militarize the conflict between the northerly Lao kingdoms of Luang Prabang and Vientiane. Between the two major Lao kingdoms if an alliance with one was sought by either Burma or Siam, the other would tend to support the remaining side. The network of alliances shifted with the political and military landscape throughout the latter half of the eighteenth century.

