1966 Nigerian coup d’état

The January 1966 military coup in Nigeria overthrew the First Republic’s civilian government and brought Major General Johnson Aguiyi-Ironsi to power.

Chukwuma Kaduna Nzeogwu: A Nigerian army major who led the coup’s principal operation in Kaduna in January 1966. He directed the plotters’ effort to seize power in northern Nigeria.
Nigeria’s First Republic crisis: The political instability and institutional conflict that undermined Nigeria’s First Republic in the early 1960s. Its escalating crises created the setting in which the coup plotters believed intervention was possible.
Nigerian military rule: Periods in which Nigeria was governed by military leaders rather than elected civilian authorities. The coup opened a long period of military intervention in Nigerian politics.
Coup d’état: The sudden, usually unlawful seizure of government power by a small group, often military officers. The January events fit this broader form of political seizure, despite the plotters’ stated reform aims.
Johnson Aguiyi-Ironsi: A Nigerian army major general who became head of state after the January 1966 coup. As the army’s senior surviving commander, he assumed authority after the coup leaders failed to establish control.
1964 Nigerian general election: A federal election marked by boycott, disputed results, and political conflict in Nigeria. The election deepened distrust between rival political coalitions before the coup.
1966 anti-Igbo pogroms: Waves of violence against Igbo people in northern Nigeria in 1966, killing thousands and displacing many more. The January coup’s perceived ethnic imbalance helped inflame reprisals against Igbo civilians.
Nigeria’s First Republic: Nigeria’s civilian constitutional order from 1963 until its overthrow by the military in January 1966. Its elected institutions and the coup’s military seizure represent opposing forms of political authority.
Nigerian Army: Nigeria’s land warfare service and the institution from which the January 1966 coup plotters came. The plot relied on army units, but the military as a whole did not act in unison.
1965 Western Region election: A regional election in Western Nigeria whose disputed outcome triggered widespread political violence. The violence strengthened claims that civilian leaders could no longer maintain order.

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