Constitution of Angola to remain president until 2022. Angola was a colony of Portugal for more than 400 years from the 15th century. Demands for independence picked up momentum during the early 1950s. The principal protagonists included the MPLA, founded in 1956, the National Front for the Liberation of Angola (FNLA), which appeared in 1961, and the UNITA, founded in 1966. After many years of conflict that weakened all of the insurgent parties, Angola gained independence on 11 November 1975, after the Carnation Revolution in Portugal overthrew the Portuguese regime headed by Marcelo Caetano. A fight for dominance broke out immediately between the
Angola–Namibia relations the fighting in Namibia would eventually drive at least 43,000 Namibian refugees into exile in Angola, many of whom joined PLAN. Following Angolan independence in 1975, SWAPO established a formal alliance with Angola's new ruling party, the People's Movement for the Liberation of Angola (MPLA). After being expelled from Zambia between 1976 and 1979, PLAN was permitted by the MPLA to establish its regional headquarters inside Angola. Access to bases inside Angola provided PLAN with opportunities to train its forces in secure sanctuaries and infiltrate insurgents and supplies across Namibia's northern border. The MPLA government also permitted shipments of arms