This week marked the 50th anniversary of the Biafra war. Millions died, mostly from famine, as Nigerian government forces defeated attempts by the Igbo people in the south east to claim an independent Biafran state. You might think an event of such magnitude would be burned into the nation's memory, but it's not a part of history that many young Nigerians know much about. BBC Africa's Tomi Oladipo has been filling in some of those gaps.

Image: Biafran flag painted on a wall