Prehistory
Stone tools discovered in northern Laos attest to the presence of hunter-gatherers from at least 40,000 years ago. Archeological evidence suggests agriculturist society developed during the 4th millennia B.C.. Burial jars and other kinds of sepulchers suggest a complex society in which bronze objects appeared around 1500 B.C., and iron tools were known from 700 B.C. The proto-historic period is characterized by contact with Chinese and Indian civilizations. From the fourth to the eighth century, communities along the Mekong River began to form into townships, or Muang as they were called.
Lan Xang
Laos traces its history to the kingdom of Lan Xang (Million Elephants), founded in the 14th century, by a Lao prince, Fa Ngum, who took over Vientiane with 10,000 Khmer troops. Ngum was descended from a long line of Lao kings, tracing back to Khoun Boulom. He made Theravada Buddhism the state religion and Lan Xang prospered. Within 20 years of its formation, the kingdom expanded eastward to Champa and along the Annamite mountains in Vietnam. His ministers, unable to tolerate his ruthlessness, forced him into exile to the present-day Thai province of Nan in 1373, where he later died. Fa Ngum's eldest son, Oun Heuan, came to the throne under the name Samsenthai and reigned for 43 years. During his reign, Lan Xang became an important trade center. After his death in 1421, Lan Xang collapsed into warring factions for the next 100 years.
In 1520, Photisarath came to the throne and moved the capital from Luang Phrabang to Vientiane to avoid Burmese invasion. Setthathirat became king in 1548, after his father was killed, and ordered the construction of what would become the symbol of Laos, That Luang. Setthathirat disappeared in the mountains on his way back from a military expedition into Cambodia and Lan Xang began to rapidly decline. It was not until 1637, when Sourigna Vongsa ascended the throne, that Lan Xang would
