The objective of this research is to investigate the causes of conflict in Africa. Further, it discusses the role played by the Organization of African Unity (OAU) in ensuring political order during its period of existence. The study employs content analysis of historical documents, academic works, internet sources and also current conflict situations in Africa as a baseline for its argument. Mainly, the study shows which major sources of tension need to be resolved to enjoy a sound, stable, peaceful, political and economic environment in the new millennium.