Angola–Cuba Declaration of 1984 on 11 November 1975, with Agostinho Neto becoming the first president, though the civil war continued. José Eduardo Dos Santos became the first elected President of Angola from the MPLA-LT and continued to get the support of Cuba. Angola was a colony of Portugal for more than 400 years from the 15th century. The demand for independence in Angola picked up momentum during the early 1950s. The Portuguese régime, refused to accede to the demands for independence, provoking an armed conflict that started in 1961 when freedom fighters attacked both white and black civilians in cross-border operations in northeastern Angola,
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