Republic of Namibia (independent)
Who & why: after a UN-supervised transition and elections won by SWAPO (the South West Africa People's Organisation, which had led the armed liberation struggle since the 1960s), Namibia becomes independent on 21 March 1990 under founding president Sam Nujoma — the last African territory to gain independence from colonial and settler rule (excluding Eritrea's later 1993 separation from Ethiopia).
What it represents: blue for the sky and Atlantic Ocean, red for the people and their heroism, green for vegetation and agriculture, white for peace and unity, and the gold sun for life and energy — a design that deliberately breaks from both the German and South African flags that preceded it.