Nigeria became a federation of four regions in? by Sunday | Jul 16 | Government WAEC | 0 comments A. 1954 B. 1960 C. 1963 D. 1967 E. 1975 Correct Answer: Option C – 1963 Users Also Read These:Before Nigeria became a republic; the highest body…Who re-organised the Nigeria's four regions into…Nigeria became a federation of thirty-six state…Nigeria became a federation as a result of the…Nigeria formally became a federation in?