ocr: NIGERIA 450 4 E Official Name: Federal Republic of Nigeria Capital: Abuja Population: 90 million Currency: Naira Official Language: English AFRICA'S MOST POPULOUS STATE, N G E O Nigeria gained: its independence R Late from Britain in 1960. Its terrain varies from Chad tropical rainforest and swamps in the south to savanna in the north. Nigeria Kano: has been dominated by military governments since 1966. A promised return to civilian: rule was abortedin 1993 when the army refusedto accept the results of presidential elections. Nigeriais OPEC's fourth- N ABLIA largest oil producer, but: it. has ...