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
Music of Angola settled in Rotterdam, where he became closely associated with the Cape Verdean community. Bonga's "Mona Ki Ngi Xica" (1972) earned him an arrest warrant, and he began travelling between Germany, France and Belgium until Angola gained independence in 1975. After independence came civil war. Many popular musicians were killed, and some who were spared simply left the country. In the early 1980s, Angolan popular music was deeply influenced by Cuban music, especially in the work of André Mingas and brother Rui Mingas. Cuban Rumba was popular and influential across southern Africa, including Angola's neighbor Zaire (renamed the Democratic Republic of