Politics of Singapore service appointments and national security matters. Singaporean politics have been dominated by the People's Action Party (PAP) since the 1959 general election when Lee Kuan Yew became Singapore's first prime minister (Singapore was then a self-governing state within the British Empire). The PAP has been the only ruling party to form the government since then. Singapore joined the Federation of Malaysia in 1963 and gained independence in 1965 after being expelled. Singapore has consistently been rated as the least-corrupt country in Asia and amongst the top ten cleanest in the world by Transparency International. The World Bank's governance indicators have
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