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
1950s in Angola of Northern Angola, which advocated the independence of the traditional Kingdom of Kongo, in 1954. Portuguese police arrested Agostinho Neto of the MPLA and future President of Angola (1975–1979), in 1952 and again in 1955 for his involvement in the Portuguese Communist Party. He returned to Angola in 1959 and police arrested him again in 1960. Portuguese authorities arrested over 100 MPLA members in 1959. The Portuguese discovered petroleum in Angola in 1955. Production began in the Cuanza basin in the 1950s, in the Congo basin in the 1960s, and in the exclave of Cabinda in 1968. The Belgian company