Mutasim and the Policy of Transition of the Capital City

Nearly 75 years after the foundation of Baghdad as the Abbasid's capital by the Caliph Mansur,the policy of the transition of the capital was adopted by one of his successors namely Mutasim.He transferred the political center of his caliphate to the new founded city of Samarra and left Baghdad which was achieved the highest cultural and political position in the Islamic world. This study tries to examine the background of above-mentioned policy and analyse its wanted and unwanted aftermaths in order to clarify the success and unsuccess of the Caliph Mutasim.