Nigeria is a country in equatorial West Africa. It is the continent's most populous nation. It has a southern coastline on the Gulf of Guinea, and has Benin to the west, Cameroon to the southeast, Chad to the northeast, and Niger to the north.
Lagos is the largest city in Nigeria. With an estimated population of 8.8 million inhabitants in the city, or rather 10.7 million in the metropolitan area, Lagos ranks second only to Cairo as the largest city in Africa.
Abuja is the capital of Nigeria. Since most Nigerian government agencies are now headquartered in Abuja and most other countries' embassies have been relocated from Lagos to Abuja, it is a surprisingly expensive city.