Nigeria, officially the Federal Republic of Nigeria, is a federal constitutional republic comprising thirty-six states and its Federal Capital Territory, Abuja. The country is located in West Africa and shares land borders with the Republic of Benin in the west, Chad and Cameroon in the east, and Niger in the north.
Nigeria is the most populous country in Africa, the eighth most populous country in the world, and the most populous country in the world in which the majority of the population is black. It is listed among the "Next Eleven" economies, and is a member of the Commonwealth of Nations. The economy of Nigeria is one of the fastest growing in the world, with the International Monetary Fund projecting a growth of 9% in 2008 and 8.3% in 2009.
It is the third largest economy in Africa, and is a regional power that is also the hegemon in West Africa.