Nigeria's 60 years in photos: One from each decade since independence

Click here  As Nigeria prepares to celebrate its independence anniversary, the BBC's Nduka Orjinmo selects six images, one from each decade, that represent watershed moments in the country's 60 years of self-rule. Check out the selection here from BBC News:

1970s - A civil war that killed millions -- Nigeria civil war, Biafra, at the front line, young officer ordering an attack.