Burkina Faso
Who & why: on 4 August 1984, the revolutionary government of Captain Thomas Sankara renames the country from Upper Volta — a colonial-era label with no meaning in any Burkinabè language — to Burkina Faso, joining the Mooré word for "upright, incorruptible people" with the Dioula word for "fatherland." Sankara's four years in power bring sweeping literacy, vaccination, and land-reform campaigns before he is killed in a coup on 15 October 1987 led by his close associate Blaise Compaoré, who then governs for 27 years. The flag adopted under Sankara outlasts him: it flies unchanged through Compaoré's long rule, his 2014 ouster, and the coups of 2022.
What it represents: a two-band flag of red over green with a centered gold five-pointed star, replacing the old black-white-red tricolor entirely. Red and green are widely shared pan-African colors signaling solidarity with other post-colonial African states; the gold star stands for the guiding light of the revolution.