Nigeria
Nigeria - Library of Congress Country Studies
The Library of Congress Country Study for Nigeria provides an excellent and fairly detailed history of the country. This information was originally compiled for the US Department of Army in case of potential deployment -- examining the historical, social, economic, and political background the country. (The only problem with this site is the awkwardness of navigating so many pages.)
Nigeria's Chief of State and Cabinet Ministers
Updated weekly, this list of Nigeria's Chief of State and Cabinet Ministers is provided by the Central Intelligence Agency of the United States of America.
CIA World Fact Book: Nigeria
A useful map and a range of geographical, political, and economic facts which are mostly up-to-date. Unfortunately this country profile lacks historical information (except for independence date), but the population statistics are probably the best available.
Timeline for Nigeria from the BBC
A chronology of important events in the history of Nigeria given by year (and for more recent events by month also).
Nigeria - a Country Profile from the BBC
An extremely brief historical overview accompanies this BBC Country Profile of Nigeria. Of particular interest are the simplified regional map (see where the country is in Africa), a photograph of Nigeria’s current Chief of State, and details about the countries media.
Nigeria History from Lonely Planet
A quirky, colloquial presentation of Nigeria’s history presented by LonelyPlanet.com. Makes awfully good reading and may galvanise your interest in Africa’s regional history. Not only suitable for travellers.
Background Notes: Nigeria
A useful potted history is included with these US Department of State Background Notes on Nigeria. Also included is a range of political, economic, and geographical data, as well as information on its people, defence, and relations with the US.
Nigeria
A great map showing pre-colonial peoples, and the particular domination of the region by the Yoruba, Igbo, Fulani and Hausa. Also includes a brief description of pre- and post-colonial history and more information about these particular peoples.