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
Angola a population of 25.789.024 inhabitants. It is estimated that Angola was host to 12,100 refugees and 2,900 asylum seekers by the end of 2007. 11,400 of those refugees were originally from the Democratic Republic of Congo, who arrived in the 1970s. there were an estimated 400,000 Democratic Republic of the Congo migrant workers, at least 220,000 Portuguese, and about 259,000 Chinese living in Angola. Since 2003, more than 400,000 Congolese migrants have been expelled from Angola. Prior to independence in 1975, Angola had a community of approximately 350,000 Portuguese, but the vast majority left after independence and the ensuing civil