The two military coups that toppled civilian regimes in Nigeria were those of

The two military coups that toppled civilian regimes in Nigeria were those of January 1966 and December 1983. Explanation: The question asks for the two military coups that overthrew civilian regimes in Nigeria. The correct answer is option A, which lists January 1966 and December 1983. Option B lists July 1966 and August 1985, which is incorrect because the July 1966 coup overthrew a military government, not a civilian one. Option C lists January 1966 and July 1975, which is also incorrect because the July 1975 coup overthrew the military government that came to power after the January 1966 coup. Option D lists February 1976 and December 1983, which is incorrect because there was no coup in February 1976.