Decolonization refers to the unoing of colonialism, the establishment of governance or authority through the creation of settlements by another country or jurisdiction. The term generally refers to the achievement of independence by the various Western colonies and protectorates in Asia and Africa following World War II. This conforms with an intellectual movement known as Post-Colonialism. A particularly active period of decolonization occurred between 1945 to 1960, beginning with the independence of Pakistan and the Republic of India from the British Raj in 1947 and the First Indochina War. A number of national liberation movements were established prior to the war, but most did not achieve their aims until after it. Decolonization can be achieved by attaining independence, integrating with the administering power or another state, or establishing a "free association" status. The United Nations has stated that in the process of decolonization there is no alternative to the principle of self-determination. Decolonization may involve peaceful negotiation and/or violent revolt and armed struggle by the native population.