Nigerians today have to deal with the legacy of colonialism, war, pogroms and famine. (1)
https://en.wikipedia.org/wiki/Nigerian_Civil_War "The Nigerian Civil War (also known as the Biafran War and the Nigerian-Biafran War) ... between 500,000 and 3 million Biafran civilians died of starvation."
This is just scratching the surface.