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
Christianity in Angola were also Protestants, even if their commitment may have diminished over time. Estimates of the number of Roman Catholics in Angola varied. One source claimed that about 55 percent of the population in 1985 was Roman Catholic; another put the proportion in 1987 at 68 percent. Most Roman Catholics lived in western Angola, not only because that part of the country was the most densely populated but also because Portuguese penetration into the far interior was comparatively recent and Roman Catholic missionaries tended to follow the flag. The most heavily Roman Catholic area before independence was Cabinda Province, where most