Cape Verde when Portuguese explorers discovered and colonized the islands, establishing the first European settlement in the tropics. Ideally located for the Atlantic slave trade, the islands grew prosperous throughout the 16th and 17th centuries, attracting merchants, privateers, and pirates. The end of slavery in the 19th century led to economic decline and emigration. Cape Verde gradually recovered as an important commercial center and stopover for shipping routes. Incorporated as an overseas department of Portugal in 1951, the islands continued to campaign for independence, which was peacefully achieved in 1975. Since the early 1990s, Cape Verde has been a stable representative democracy,
African Party for the Independence of Guinea and Cape Verde the 1999–2000 elections. However, it returned to office after winning parliamentary elections in 2004 and presidential elections in 2005, since which it has remained the largest party in the National People's Assembly. The PAIGC also governed Cape Verde, from its independence in 1975 to 1980. After the military coup in Guinea-Bissau in 1980, the Cape Verdean branch of the PAIGC was converted into a separate party, the African Party for the Independence of Cape Verde. The party was established in Bissau on 19 September 1956 as the African Party of Independence ("Partido Africano da Independência"), and was based on the