ocr: Under British control since 1841,. Brunei became a formal British Frotectorate in 1888. - 1929 Oil extraction begins. 1941-1945 Uccupied - byJapan. 1959 First constitution enshrines Islam as state religion. Internal selfgovernment. 1962 Pro-democracy rebellion crushed with help of British Gurkhas. State of emergency announced: Sultan rules by decree. 1984 Independence from Britain. Bruneijoins ASEAN. 1990 Ideology of Malay Muslim Monarchy introduced. - 1991 Imports of alcohol banned. 1992Joins Non-Aligned Movement.