The Hungarian Revolution of 1956 (23 October – 4 November 1956; Hungarian: 1956-os forradalom), also known as the Hungarian Uprising, was an attempted countrywide revolution against the government of the Hungarian People's Republic (1949–1989) and the policies caused by the government's subordination to the Soviet Union (USSR).[nb 2] The uprising lasted 12 days before being crushed by Soviet tanks and troops on 4 November 1956. Thousands were killed and wounded and nearly a quarter of a million Hungarians fled the country