Bougainville ( ; Tok Pisin: Bogenvil), officially the Autonomous Region of Bougainville (Tok Pisin: Otonomos Region bilong Bogenvil), is an autonomous region in Papua New Guinea. The largest island is Bougainville Island, while the region also includes Buka Island and a number of outlying islands and atolls. The current capital is Buka, situated on Buka Island.
In 2011, the region had an estimated population of 250,000. The lingua franca of Bougainville is Tok Pisin, while a variety of Austronesian and non-Austronesian languages are also spoken. The region includes several Polynesian outliers where Polynesian languages are spoken. Geographically the islands of Bougainville and Buka form part of the Solomon Islands archipelago, but are politically separate from the independent country of Solomon Islands. Historically, Bougainville and Buka, together with the islands of Choiseul, Santa Isabel, the Shortlands and Ontong Java, which are all now part of the country of Solomon Islands, formed the German Solomon Islands Protectorate, the geographical area later being referred to as the North Solomon Islands.
Bougainville has been inhabited by humans for at least 29,000 years. During the colonial period the region was occupied and administered by the Germans, Australians, Japanese, and Americans for various periods. The name of the region originates from French admiral Louis Antoine de Bougainville, who reached it in 1768.
Bougainvillean separatism dates to the 1960s, and the Republic of the North Solomons was declared shortly before the independence of Papua New Guinea in 1975; it was subsumed into Papua New Guinea the following year. Conflict over the Panguna mine became the primary trigger for the Bougainville Civil War (1988–1998), which resulted in the deaths of up to 20,000 people. A peace agreement resulted in the creation of the Autonomous Bougainville Government.
In late 2019, a non-binding independence referendum was held with 98.31% voting for independence rather than continued autonomy within Papua New Guinea. As a result, the regional authorities intend to become independent between 2025 and 2027, pending ratification by the Papua New Guinean government. If ratified, the capital may relocate from Buka back to the previous location of Arawa.
History
Prehistory
Bougainville has been inhabited by humans for at least 29,000 years, according to evidence obtained from Kilu Cave on Buka Island. Until about 10,000 years ago, during the Last Glacial Maximum, there was a single island referred to as "Greater Bougainville" that spanned from the northern tip of Buka Island to the Nggela Islands north of Guadalcanal.
The first inhabitants of Bougainville were Australo-Melanesians who presumably arrived from the Bismarck Archipelago. Around 3,000 years ago, Austronesian peoples brought the Lapita culture to the islands, introducing pottery, agriculture, and domesticated animals such as pigs, dogs, and chickens. Both Austronesian and non-Austronesian languages are spoken on the islands to this day, however there has been significant mixing between the populations to the point that cultural and genetic differences are no longer correlated with language.
Colonial history
The first Europeans to sight present-day Bougainville were the Dutch explorers Willem Schouten and Jacob Le Maire, who glimpsed Takuu Atoll and Nissan Island in 1616. British naval officer Philip Carteret saw Buka Island in 1767 and also visited what became the Carteret Islands. In 1768, French admiral Louis Antoine de Bougainville sailed along the east coast of the island that now bears his name.
German administration
The German Empire, which had already begun operations in New Guinea, annexed present-day Bougainville in 1886, after agreeing with the United Kingdom to divide the Solomon Islands archipelago between them. A German protectorate over the northern islands was established later that year, but the British Solomon Islands Protectorate was not established until 1893. The initial boundary between the two territories was much more southerly, with Choiseul Island, Santa Isabel Island, Ontong Java, the Shortland Islands, and part of the Florida Islands included in the German section. The current boundary between PNG and Solomon Islands is derived from the Tripartite Convention of 1899, which saw those islands ceded to the United Kingdom.