Nigeria is a large West African country, more than 900 000 km more than 900 000 km 2 2 in area – nearly in area – nearly four times the size of the UK. Despite four times the size of the UK. Despite having a population of about 117 million having a population of about 117 million people, 42% of whom live in cities, Nigeria people, 42% of whom live in cities, Nigeria has about half the populatio...