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,
Cape Verde United States. Immediately following the November 1980 coup in Guinea-Bissau, relations between Cape Verde and Guinea-Bissau became strained. Cape Verde abandoned its hope for unity with Guinea-Bissau and formed the African Party for the Independence of Cape Verde (PAICV). Problems have since been resolved and relations between the countries are good. The PAICV and its predecessor established a one-party system and ruled Cape Verde from independence until 1990. Responding to growing pressure for pluralistic democracy, the PAICV called an emergency congress in February 1990 to discuss proposed constitutional changes to end one-party rule. Opposition groups came together to form the