Federal Republic of Nigeria – sovereign country located in West Africa. Nigeria is a federal constitutional republic comprising thirty-six states and one Federal Capital Territory. Nigeria borders the Republic of Benin in the west, Chad and Cameroon in the east, and Niger in the north. Its coast lies on the Gulf of Guinea, part of the Atlantic Ocean, in the south. The capital of Nigeria is Abuja. The following outline is provided as an overview of and topical guide to Nigeria: