The Menzies government refers to the period when Sir Robert Menzies served as the Prime Minister of Australia, first from 1939 to 1941 and then from 1949 to 1966. Menzies is known for being Australia's longest-serving Prime Minister, leading the country through significant post-war economic growth and the establishment of the Australian National University. During his time in office, the Menzies government focused on policies that promoted economic stability, national security, and the development of infrastructure. Menzies was a key figure in the formation of the Liberal Party of Australia and played a crucial role in shaping modern Australian politics.