Sunni and Shia Islam are the two main branches of Islam, with theological differences rooted in history, interpretation, and practice. Key differences:

*1. Succession to the Prophet Muhammad:*

* Sunni: Believe Abu Bakr, a companion of the Prophet, was the rightful first caliph.

* Shia: Believe Ali ibn Abi Talib, the Prophet’s cousin and son-in-law, was the rightful first caliph.

*2. Imamate (Leadership):*

* Sunni: