Malagasy Republic / Republic of Madagascar
Who & why: Madagascar becomes an autonomous republic within the French Community in 1958, adopting its own flag ahead of full sovereignty, and gains full independence as the Malagasy Republic on 26 June 1960 under President Philibert Tsiranana. The country has continued as a republic since, through several changes of constitution and government (including a Marxist-leaning period in the 1970s-80s and a return to multiparty democracy from the 1990s), under the same national flag throughout.
What it represents: white and red are said to echo the old Merina Kingdom's own royal colors, a deliberate link to Madagascar's precolonial statehood, while green represents the coastal peoples and the hope of the newly independent nation — adopted by the pre-independence constituent assembly in October 1958.