Buyids take possession of Baghdad
Baghdad, IraqIn 945, Ahmad entered Iraq and made the Abbasid Caliph his vassal, at the same time receiving the laqab Mu'izz ad-Dawla ("Fortifier of the State"), while 'Ali was given the laqab Imād al-Dawla ("Support of the State"), and Hasan was given the laqab Rukn al-Dawla ("Pillar of the State").