The Historians View (Al-Yaqubi and Al-Tabari and Al-Masoudi) For the Caliph of Abu Jaafar Al-Mansour

This research sheds light on the views and writings of (Al-Yaqoubi, Al-Tabari, Al-Masoudi) about the Abbasid Caliph (Abu Jaafar Al-Mansour), where they listed in their writings and writings the most important incidents that occurred during the period of the caliphate of Al-Mansur. Incidents and their comparison based on the narratives of the three historians contained in their well-known historical books, with the aim of arriving at the different ideas of these people.   The researcher in this research referred to the most prominent and most controversial events during the time of the caliphate of Abu Jaafar al-Mansur, which bear different interpretations and interpretations based on the sources that were quoted. Therefore, the focus has been on some events and not others, due to the large number of events and the inability to collect them in a scientific research, so we referred to the most important, prominent and most effective ones. This does not mean that we did not rely on well-known sources and references in this research. This research deals with the opinions of the three historians about the events that occurred during the early stages of the reign of Caliph A. Bu Jaafar Al-Mansour, and that these opinions reveal to us the reality of the views we show about these events and the extent of their bias or not, and that except for these writings, there are no other sources that show the views of these historians, so the analysis of these texts was the main and basic source for determining their views on these events that occurred in The time of the rule of the Caliph Abu Jaafar al-Mansur.