Republic of Djibouti
Who & why: after a 1967 referendum controversially favors continued association with France, a second referendum in 1977 finally delivers independence, and the Republic of Djibouti is proclaimed on 27 June 1977 under President Hassan Gouled Aptidon — the last French territory on mainland Africa to decolonize, some fifteen years after most of its regional neighbors. Djibouti's small size and strategic position at the Bab-el-Mandeb strait, controlling access between the Red Sea and the Gulf of Aden, has made it host to multiple foreign military bases since, including France's, the United States', and China's.
What it represents: light blue for the sky and sea, and for the Issa Somali population, light green for the earth and the Afar population, a white hoist triangle for peace, and a red five-pointed star for the unity of the two peoples in one state — adapted directly from the flag of Aptidon's Popular Rally for Progress (LPAI) independence movement.