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. 1960s - The making of an African giant After decades of British colonial rule, Prime Minister, Sir Abubakar Tafawa Balewa took on the reins of power and led independent Nigeria's new coalition government. The celebrations lasted for weeks in some parts of the country and for those present at the Race Course (now Tafawa Balewa Square) in Obalende, Lagos, on 1...