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Ethiopia was, famously, never colonized but, having built its own empire, it has similar problems within its borders. Ethiopia has nine major ethnic groups among its population. There are nine administrative areas and two self-governing cities, all based on ethnicity. More than eighty languages are spoken, which spring from four major groupings, and all enjoy official state recognition. The Oromo are the biggest group with about 35 per cent of the population, followed by the Amhara with 27 per cent, and then the Somali and Tigray, each with approximately 6 per cent.
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Tim Marshall (The Power of Geography: Ten Maps that Reveal the Future of Our World – the sequel to Prisoners of Geography)