Nasir al-Din al-Tusi and the fall of Baghdad in the hands of the Mongols in the year (656 AH / 1258 AD) a historical and analytical vision

Abstract

In the year 132 AH, the Abbasid state was declared in Kufa, and the Abbasids considered the success of the revolution and the emergence of the state ((our inheritance from our Prophet)) and their first step was to get rid of Persian influence, so they removed Abu Salama Al-Khalal from the ministry, and killed him, as they killed Abu Muslim Khorasani, which cleared the way for influence Al-Turki, who was encouraged and supported by Al-Mu'tasim, especially after the construction of Samarra, and the overthrow of the Arabs from the Diwan al-Jund. Weakness began to spread in the entity of the state and increased after the Buyids entered Baghdad, where they dominated everything, even the insignia of the caliphate, and their rule continued from the year 334 AH to the year 447 AH, and the state and the nation were