Laos

The territory of present-day Laos has been inhabited since prehistoric times, with archaeological evidence including the megalithic stone jars of the Xieng Khouang plateau, dated to the late Iron Age and associated with a culture that flourished from roughly 500 BCE to 500 CE. From the early centuries of the common era, the middle Mekong valley sat at the periphery of larger Indianised polities, including the Mon Dvaravati culture and the Khmer Empire, whose influence reached the region between the ninth and thirteenth centuries. Tai-speaking peoples migrated southward from what is now southern China during the first millennium and gradually established small principalities, or muang, along the Mekong and its tributaries.

The first unified Lao state, the kingdom of Lan Xang Hom Khao (often translated as the Land of a Million Elephants and the White Parasol), was founded in 1353 by Fa Ngum, a prince who had been raised at the Khmer court at Angkor. Lan Xang reached its height in the sixteenth and seventeenth centuries under rulers such as Setthathirath, who moved the capital to Vientiane in 1563, and Sourigna Vongsa, whose long reign from 1637 to 1694 is remembered as a golden age of Buddhist scholarship and trade. After Sourigna Vongsa's death, succession disputes broke the realm apart, and by the early eighteenth century three rival kingdoms had emerged at Luang Prabang, Vientiane, and Champasak. These weakened states fell progressively under Siamese suzerainty during the late eighteenth and early nineteenth centuries, culminating in the Siamese sack of Vientiane in 1828 after the failed revolt of King Anouvong.

French colonial expansion from Vietnam absorbed the Lao lands in stages between 1893 and 1907, organising them as a protectorate within French Indochina while preserving the royal house of Luang Prabang as a nominal monarchy. A brief Japanese occupation late in the Second World War was followed in 1945 by a short-lived independent government known as the Lao Issara, which was suppressed when French forces returned. Full independence as the Kingdom of Laos was achieved on 22 October 1953 within the framework of the French Union, and the country's neutrality was formally recognised by the Geneva Conference of 1954.

Independent Laos was almost immediately drawn into Cold War conflict. A protracted civil war pitted the royal government, supported by the United States and Thailand, against the communist Pathet Lao, backed by North Vietnam and the Soviet Union, while the country was subjected to extensive American aerial bombing between 1964 and 1973 in connection with the wider Vietnam War. After the fall of Saigon and Phnom Penh in 1975, the Pathet Lao took power, abolished the monarchy, and on 2 December 1975 proclaimed the Lao People's Democratic Republic under the leadership of the Lao People's Revolutionary Party.

From the late 1980s the new state pursued a programme of cautious market-oriented reform known as the New Economic Mechanism, gradually opening to foreign investment and regional trade while retaining one-party rule. Laos joined the Association of Southeast Asian Nations in 1997 and the World Trade Organization in 2013, and has deepened economic ties with neighbouring Vietnam, Thailand, and especially China. The present-day Lao People's Democratic Republic remains a unitary one-party socialist republic, governed under the constitution of 1991 as subsequently amended, with the Lao People's Revolutionary Party as the sole legal political party.