Prime Minister of Australia prime minister, otherwise William McMahon63. Robert Menzies was the oldest person to ever be prime minister, leaving office at 71 years old. The longest-serving Prime Minister was Sir Robert Menzies, who served in office twice: from 26 April 1939 to 28 August 1941, and again from 19 December 1949 to 26 January 1966. In total Robert Menzies spent 18 years, 5 months and 12 days in office. He served under the United Australia Party and the Liberal Party respectively. The shortest-serving Prime Minister was Frank Forde, who was appointed to the position on 6 July 1945 after the death of
Prime Minister of Angola also vacant between 1999 and 2002. The post was again abolished due to the 2010 Constitution of Angola, which integrates the functions of the prime minister into the office of the president, who is not subjected to the confidence of the parliamentary majority, contrarily to the prime minister. Prime Minister of Angola According to the 1992 constitution, the Prime Minister of Angola was a high government official in Angola, but with limited powers as head of government. Along with the rest of the Council of Ministers, the Prime Minister was appointed by the President. The position was originally created when