Republic of The Gambia
Who & why: Gambia becomes a republic within the Commonwealth on 24 April 1970, following a referendum, with Prime Minister Dawda Jawara becoming president. From 1982 to 1989 Gambia enters the Senegambia Confederation with Senegal — the country that surrounds it on three landward sides — a real attempt at integrating defense, security, and economic policy after Senegalese troops helped put down a 1981 coup attempt; the confederation dissolves in 1989 without ever merging the two states, and Gambia's own flag and sovereignty are unaffected throughout. A 1994 military coup under Yahya Jammeh is later reversed by a peaceful transfer of power in 2017 after he loses an election and eventually steps down.
What it represents: the same 1965 flag continues to fly, unaltered by the change to a republic or by the confederation years — red for the sun and the savanna to the north and south of the river, blue for the Gambia River itself, green for the forests and farmland, and the two thin white fringes for unity and peace between Gambia's peoples.