Over which main point did Sunnis and Shias disagree?

the role of women in Muslim society
what should be included in the Sharia
who should be Muhammad's successor
the role of religion in government

1 answer

Sunnis and Shias primarily disagreed over who should be Muhammad's successor. This disagreement arose after the Prophet Muhammad's death in 632 CE, leading to the eventual split into the two main sects of Islam. Sunnis believed that the community should select the leader (caliph), while Shias believed that leadership should remain within the Prophet's family, specifically appointing Ali, Muhammad's cousin and son-in-law.