Islamic sectarianism refers to the divisions within the Islamic faith, primarily between the two largest sects: Sunni and Shia. These divisions arose from historical disagreements over leadership and authority following the death of the Prophet Muhammad. Over time, differing beliefs, practices, and interpretations of Islamic teachings have developed, leading to distinct religious identities. The impact of Islamic sectarianism can be seen in various regions, often resulting in social and political tensions. Conflicts may arise from historical grievances, competition for power, and differing religious practices, affecting communities in countries like Iraq, Syria, and Lebanon. Understanding these divisions is crucial for addressing the challenges they pose to peace and stability.