Nigeria (officially the Federal Republic of Nigeria), is a federal constitutional republic comprising 36 states and its Federal Capital Territory, Abuja. Nigeria 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. Its coast in the south lies on the Gulf of Guinea in the Atlantic Ocean.
Present-day Nigeria has been the site of numerous kingdoms and tribal states spanning over a millennium. The modern state has its origins in British colonization during the late 19th to early 20th centuries, with the merging of the Southern Nigeria Protectorate and Northern Nigeria Protectorate. During the colonial period, the British set up administrative and legal structures whilst retaining traditional chiefdoms. Nigeria achieved independence in 1960, but plunged into a two-year civil war several years later. It has since alternated between democratically-elected civilian governments and military dictatorships, with its 2011 presidential elections being viewed as the first to be conducted reasonably freely and fairly.