Malaysia–United Kingdom relations
In 1824 British hegemony in Malaya was formalised by the Anglo-Dutch Treaty, which divided the Malay Archipelago between Britain and the Netherlands. The Dutch evacuated Malacca and renounced all interest in Malaya, while the British recognised Dutch rule over the rest of the East Indies. By 1826, the British controlled Penang, Malacca, Singapore and the island of Labuan, which they established as crown colonies of the Straits Settlements, administered first under the EIC until 1867, when they were transferred to the Colonial Office in London. On the other hand, White Rajahs (founded by British adventurer James Brooke) ruled the Kingdom of Sarawak from 1841 to 1946, while North Borneo was founded by the North Borneo Chartered Company. Both Sarawak and North Borneo subsequently became a British Protectorate, and a Crown colony in 1946. In 1944, the British drew up plans for a Malayan Union, which would unite the Federated and Unfederated Malay States (except for Singapore), into a single Crown colony, with a view towards independence. It was established in 1946, and was dissolved in 1948 to be replaced by the Federation of Malaya. The federation became independent from the United Kingdom on 31 August 1957, and joined North Borneo, Sarawak and Singapore to form a new larger federation known as the Federation of Malaysia on 16 September 1963. However, in less than two years upon the founding of the federation, Singapore was expelled as a consequence of the 1964 race riots.
Ketuanan Melayu
Although the idea itself predates Malaysian independence, the phrase "ketuanan Melayu" did not come into vogue until the early 2000s decade. Historically, the most vocal political opposition towards the concept has come from non-Malay-based parties, such as the Malaysian People's Movement Party (Parti Gerakan Rakyat Malaysia) and Democratic Action Party (DAP); in the 2000s decade, the multiracial People's Justice Party (Parti Keadilan Rakyat, or PKR) also positioned itself against "ketuanan Melayu", advocating instead "ketuanan rakyat" (supremacy of the people). The idea of Malay supremacy gained attention in the 1940s, when the Malays organised themselves to protest the Malayan Union's establishment, and later fought for independence. During the 1960s, there was a substantial effort challenging "ketuanan Melayu" led by the People's Action Party (PAP) of Singapore — which was a state in Malaysia from 1963 to 1965 — and the DAP after Singapore's secession. However, the portions of the Constitution related to "ketuanan Melayu" were "entrenched" after the race riots of 13 May 1969, which followed an election campaign focused on the issue of non-Malay rights and "ketuanan Melayu". This period also saw the rise of "ultras" who advocated a one-party government led by UMNO, and an increased emphasis on the Malays being the "definitive people" of Malaysia — i.e. only a Malay could be a true Malaysian.