The Abbasids and the Church
750-969 The Abbasid Revolution: Political parties arose in the Umayyad state, such as the Zubayrids, the Kharijites, and the Shiites, which weakened the Umayyads and weakened them, so the opponents coveted their shares.
The weakness of the Abbasid state and the Roman conquests
The Golden Age of the Romans 843-1025 The Abbasid state weakened: The influence of the Turks in Baghdad increased, and the voices of the concubines, the mothers of the princes, rose. The Alawites revolted, demanding the throne.
The Fatimid state
The Fatimids and the Church 843-1025 Shiites: The Shiites of Ali still demanded the caliphate for him and his descendants and considered themselves more deserving of it. The Abbasid caliphs warned them.