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.