Brunei, officially the Nation of Brunei, the Abode of Peace, is a country located on the north coast of the island of Borneo in Southeast Asia. Apart from its coastline with the South China Sea, the country is completely surrounded by the Malaysianstate of Sarawak. It is separated into two parts by the Sarawak district of Limbang. Brunei is the only sovereign state completely on the island of Borneo; the remainder of the island’s territory is divided between the nations of Malaysia and Indonesia. Brunei’s population was 428,963 in 2018. The government is an absolute monarchy under the sovereign rule of Sultan and Yang di-Pertuan, which implements a combination of English common law and sharia law, as well as direct general Islamic practices. The population is at 460,000.
At the peak of the Bruneian Empire, Sultan Bolkiah (reigned 1485–1528) is alleged to have had control over most regions of Borneo, including modern-day Sarawak and Sabah, as well as the Sulu Archipelago off the northeast tip of Borneo, and the islands off the northwest tip of Borneo. Claims also state that they had control over Seludong (“Kingdom of Maynila” to the local rulers of Maynila; where modern-day Manila now stands) but Southeast Asian scholars believe this refers to a settlement Mount Selurong in Indonesia. For political reasons, the historical rulers of Maynila maintained close cognatic ties through intermarriage with the ruling houses of the Sultanate of Brunei, but Brunei’s political influence over Maynila is not considered to have extended to military or political rule. Intermarriage was a common strategy for large thalassocratic states (maritime states) such as Brunei to extend their influence, and for local rulers such as those of Maynila to help strengthen their family claims to nobility. The maritime state of Brunei was visited by Spain’s Magellan Expedition in 1521 and fought against Spain in the 1578 Castilian War.
During the 19th century, the Bruneian Empire began to decline. The Sultanate ceded Sarawak (Kuching) to James Brooke and installed him as the White Rajah, and it ceded Sabah to the British North Borneo Chartered Company. In 1888, Brunei became a British protectorate and was assigned a British resident as colonial manager in 1906. After the Japanese occupation during World War II, in 1959 a new constitution was written. In 1962, a small armed rebellion against the monarchy was ended with the help of the British. Brunei gained its independence from the United Kingdom on 1 January 1984.
Petroleum was discovered in 1929 after several fruitless attempts. Two men, F. F. Marriot and T. G. Cochrane, smelled oil near the Seria river in late 1926. They informed a geophysicist, who conducted a survey there. In 1927, gas seepages were reported in the area. Seria Well Number One (S-1) was drilled on 12 July 1928. Oil was struck at 297 metres (974 ft) on 5 April 1929. Seria Well Number 2 was drilled on 19 August 1929, and, as of 2009, continues to produce oil. Oil production was increased considerably in the 1930s with the development of more oil fields. In 1940, oil production was at more than six million barrels. The British Malayan Petroleum Company (now Brunei Shell Petroleum Company) was formed on 22 July 1922. The first offshore well was drilled in 1957. Oil and natural gas have been the basis of Brunei’s development and wealth since the late 20th century.
Brunei is a southeast Asian country consisting of two unconnected parts with a total area of 5,765 square kilometres (2,226 sq mi) on the island of Borneo. It has 161 kilometres (100 mi) of coastline next to the South China Sea, and it shares a 381 km (237 mi) border with Malaysia. It has 500 square kilometres (193 sq mi) of territorial waters, and a 200-nautical-mile (370 km; 230 mi) exclusive economic zone. About 97% of the population lives in the larger western part (Belait, Tutong, and Brunei-Muara), while only about 10,000 people live in the mountainous eastern part (Temburong District). The total population of Brunei is approximately 460,000, of which around 150,000 live in the capital Bandar Seri Begawan. Other major towns are the port town of Muara, the oil-producing town of Seria and its neighbouring town, Kuala Belait. In Belait District, the Panaga area is home to large numbers of Europeans expatriates, due to Royal Dutch Shell and British Army housing, and several recreational facilities are located there. Most of Brunei is within the Borneo lowland rain forests ecoregion, which covers most of the island. Areas of mountain rain forests are located inland. The climate of Brunei is tropical equatorial that is a Tropical rainforest climate more subject to the Intertropical Convergence Zone than the trade winds and with no or rare cyclones. Brunei is exposed to the risks stemming from climate change along with other ASEAN member states.
