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
Santiago, Cape Verde 19th century resulted in an economic crisis, and the growing port of Mindelo on São Vicente replaced Praia as the most important port. With few natural resources and inadequate sustainable investment from the Portuguese, the citizens grew increasingly discontented with the colonial masters, who nevertheless refused to provide the local authorities with more autonomy. The island population were disadvantaged by the Portuguese colonial system and supported Amílcar Cabral and the African Party for the Independence of Guinea and Cape Verde and the independence of 1975. Santiago is the largest island of Cape Verde, with an area of . It is