evidence: Brunei, independent Islamic sultanate on the northern coast of the island of Borneo in Southeast Asia. It is bounded to the north by the South China Sea and on all other sides by the East Malaysian state of Sarawak, which also divides the state into two disconnected segments of unequal size. The western segment is the larger of the two and contains the capital city of Bandar Seri Begawan. Brunei achieved independence in 1984, having been a British protectorate since 1888. It is a member of the Commonwealth and ASEAN (Association of Southeast Asian Nations). [...] Brunei consists of a narrow coastal plain in the north, which gives way to rugged hills in the south. The country’s highest point is Pagon Peak (6,070 feet [1,850 metres]), in the southeast. Brunei is drained by the Belait, Tutong, and Brunei rivers in the western segment and by the Pandaruan and Temburong rivers in the east; all flow generally northward to the South China Sea. The Belait is the largest river in the country. The soils of Brunei are deeply weathered, highly leached, and generally infertile. Richer alluvial soils are found along the rivers and in some parts of the coastal floodplain, and these offer the best agricultural potential. White quartz sands are prevalent in some areas.