This writer lived in Nigeria for a while, in the early 1970s, just after the end of the civil war which lasted from 1967 to 1970.
That conflict was one of the bloodiest since the end of WWII.
Well more than three million people perished, most from starvation and disease.
Yet today the Nigerian civil war is nearly forgotten. Try mentioning "Biafra" to a group of notionally well-educated folks and see how many know what you're talking about.
In case you're not sure -- Biafra was the name Nigeria's Eastern Region gave to itself when it seceded from the Federation and declared independence in 1967.
That secession had followed two military coups.