Cuban intervention in Angola the requested financial assistance (100,000US$) it received from Yugoslavia. Portugal's sudden retreat from Angola and Mozambique in 1975 ended a history of South African military and intelligence cooperation with Portugal against the Angolan and Namibian independence movements dating back to the 1960s, later formalized in a secret alliance codenamed Alcora Exercise. It also ended economic cooperation with regard to the Cunene hydro-project at the Angolan-Namibian border, which South Africa had financed. South African involvement in Angola, subsumed under what it called the South African Border War, started in 1966 when the conflict with the Namibian independence movement, South West Africa
1950s in Angola 1950s in Angola Angola in the 1950s transitioned from colonial to provincial status. Angola had the status of a Portuguese colony from 1655 until the Assembly of the Republic passed a law on June 11, 1951, giving all Portuguese colonies provincial status, effective on October 20, 1951. Separatist political organizations advocating Angolan independence formed in the 1950s despite strong resistance from the Portuguese government, leading to the Angolan War of Independence (1961–1975). Viriato da Cruz and others formed the Movement of Young Intellectuals, an organization that promoted Angolan culture, in 1948. Nationalists sent a letter to the United Nations calling