Kings and Generals historical animated documentary series on the early history of Islam, as we discuss the events that led to the schism within the Muslim community, as Islam split into two branches - Sunni and Shia Islam. This happened in the latter stages of the Early Muslim Expansion, as the Rashidun caliphs - Umar, Uthman and Ali were assassinated, which led to the war of succession, killing of Ali's son Husayn in Karbala, and the creation of the Umayyad dynasty under Muawiyah I.