, ▁un ify ▁Cape ▁Ver de ▁and ▁Guinea - B iss au , ▁and ▁use ▁its ▁v angu ard ism ▁to ▁advance ▁social ist ▁revolution . ▁ ▁From ▁ 1 9 6 1 ▁on , ▁the ▁PA IG C ▁fought ▁a ▁gu err illa ▁war fare ▁campaign ▁in ▁co operation ▁with ▁its ▁frat ernal ▁party ▁um bre lla ▁group , ▁the ▁CON CP , ▁during ▁the ▁Portuguese ▁Col onial ▁War . ▁ ▁By ▁ 1 9 7 3 ▁the ▁PA IG C ▁controlled ▁Guinea - B iss au , ▁while ▁Portugal ' s ▁own ▁Car n ation ▁Revolution ▁in ▁ 1 9 7 4 ▁effectively ▁dissol ved ▁the ▁emp ire , ▁rel in qu ishing ▁Cape ▁Ver de ▁within ▁the ▁next ▁year . ▁ ▁After ▁the ▁wars ▁of ▁national ▁liber ation , ▁the ▁PA IG C ▁established ▁a ▁social ist ▁state ▁within ▁both ▁territ ories ▁under ▁Am il car ▁Cab ral ' s ▁brother , ▁Lu ís ▁Cab ral . ▁ ▁Est ab lish ment ▁ ▁Following ▁a ▁military ▁coup ▁in ▁Guinea - B iss au ▁that ▁ou sted ▁Cab ral ▁in ▁November ▁ 1 9 8 0 , ▁the ▁Cape ▁Ver de ▁portion ▁of ▁the ▁party ▁became ▁the ▁PA IC V ▁in ▁January ▁ 1 9 8 1 ; ▁it ▁was ▁head ed ▁by ▁the ▁President ▁of ▁Cape ▁Ver de , ▁Arist ides ▁Pere ira . ▁ ▁Mult ipart y ▁dem ocracy ▁ ▁At ▁an ▁extraordinary ▁party ▁con gress ▁in ▁February ▁ 1 9 9 0 , ▁the ▁PA IC V ▁approved