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Military coup d'état brought an abrupt end to Shagari's presidency, interrupting Nigeria's democratic journey. Major General Muhammadu Buhari led a group of military officers in overthrowing the civilian government, citing rampant corruption and economic mismanagement as the primary reasons for their intervention. This event marked a significant setback for democracy in Nigeria, as it halted the progress made during the Second Republic and ushered in a period of military rule.