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Nigeria - Wikipedia
Nigeria | History, Population, Flag, Map, Languages, Capital, & Facts
Nigeria - World Factbook Glyph
History of Nigeria | Events, People, Dates, Maps, & Facts
Nigeria - The World Factbook
A brief overview and history of Nigeria | Britannica
Nigeria - Wikiwand
Nigeria country profile - BBC News
尼日利亚 - 维基百科,自由的百科全书
Nigeria travel - Lonely Planet | Africa