Pedra Branca dispute no title, historic or otherwise, to it. The Colony of Singapore became a self-governing state in 1959, and left the British Empire to join the Federation of Malaysia in 1963. Two years later, in 1965, Singapore became a fully independent republic. In 1959, in an official publication regarding meteorological information collected on Pedra Branca, Malaya listed Horsburgh Lighthouse as a "Singapore" station together with the Sultan Shoal and Raffles Lighthouses. The lighthouse on Pedra Branca was described in the same way in a joint Malaysian and Singaporean publication in 1966, the year after Singapore left the Federation. In 1967, when
Federation in practice highly centralized under the government of the Soviet Union. The Russian Federation has inherited a similar system. Nigeria, Pakistan, India and Malaysia became federations on or shortly before becoming independent from the British Empire. In some recent cases, federations have been instituted as a measure to handle ethnic conflict within a state, such as Bosnia and Herzegovina, and Iraq since 2005. With the United States Constitution having become effective on 4 March 1789, the United States is the oldest surviving federation. On the other end of the timeline is Nepal, which became the newest federation after its constitution