The sporadic violent uprisings between 1945 up to the eve of independence in which Southern Nigerians resident in the North, especially the Igbo, were attacked by their Northern compatriots, the lopsided colonial political arrangement which favoured the North despite its educational backwardness and economic dependence on the South, pernicious inter-ethnic suspicion and political rivalry among politicians from different parts of the country, indicated that the Nigerian federation which emerged on October I, 1960 was far from being a unified colonial amalgam.
The history of Nigeria from independence to the outbreak of the civil war in July 1967 has been well documented.
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