Cape Verde independence for the archipelago in 1975. Following the April 1974 revolution in Portugal, the PAIGC became an active political movement in Cape Verde. In December 1974, the PAIGC and Portugal signed an agreement providing for a transitional government composed of Portuguese and Cape Verdeans. On 30 June 1975, Cape Verdeans elected a National Assembly which received the instruments of independence from Portugal on 5 July 1975. In the late 1970s and 1980s, most African countries prohibited South African Airways from overflights but Cape Verde allowed them and became a centre of activity for the airline's flights to Europe and the
African Party for the Independence of Guinea and Cape Verde union finally broke down in 1980 following the military coup led by João Bernardo Vieira against the Cape Verdean Cabral. The Cape Verdean branch of PAIGC was subsequently converted into a separate party, the African Party for the Independence of Cape Verde (PAICV). Under Vieira, the party continued to govern the country in the 1980s and 1990s. One-party elections were held in 1984 and 1989, and Vieira was re-elected as PAIGC Secretary-General at the party's fourth congress in November 1986. Following the introduction of multi-party politics in May 1991, the first multi-party elections were held in 1994. The general elections