The Sunni-Shia divide is a centuries-old schism within Islam that emerged from a disagreement over who should succeed the Prophet Muhammad as the leader of the Muslim community. After Muhammad's death in 632 CE, his followers split into two groups: Sunnis, who believed that the new leader should be elected from among those capable of the job, and Shias, who insisted that leadership should stay within the Prophet's family, with Ali ibn Abi Talib, Muhammad’s cousin and son-in-law, being the rightful successor.
This division is significant because it has shaped not just religious practices and interpretations of Islamic law but also influenced political alliances and conflicts throughout Islamic history. Today, understanding the Sunni-Shia divide is crucial as it continues to impact geopolitics in Muslim-majority regions. The rift affects contemporary issues such as governance, social unity, and international relations in countries like Iraq, Iran, Saudi Arabia, and beyond. Recognizing this historical split helps explain current events in these areas and sheds light on how deeply rooted beliefs can persistently influence modern society.