Brunei revolt to achieve key objectives such as the capture of Brunei town and Sultan Omar Ali Saifuddien III. The revolt influenced the Sultan's 1963 decision not to join Malaysia. It is seen as one of the first stages of the Indonesia–Malaysia confrontation. The northern part of the island of Borneo was composed of three British territories: the colonies of Sarawak and North Borneo (to be renamed Sabah) and the protectorate of the Sultanate of Brunei. Brunei became a British protectorate in 1888, had an area of about and some 85,000 people. Just over half of the people were Malays, a quarter
Indonesia–Malaysia border the area. The dispute started with Malaysia issuing a map in 1979 of its territorial sea and continental shelf which included the Ambalat block. The map drew Malaysia's maritime boundary in a southeast direction into the Celebes Sea after it leaves the eastmost point on land on Sebatik island. This would include the Ambalat block, or a large part of it, within the Malaysian continental shelf. Indonesia has, like the other neighbours of Malaysia, objected to the map. Indonesia has never officially announced the exact locations of its maritime boundaries but claimed during its arguments in the Sipadan Case that