Roman civilization ,The Abbasid Revolution and Founding of Baghdad

The gutters of Mesopotamia, winding like tableware vestments through the vast plains of Iraq, were the lifelines of civilization. Along their banks, metropolises had risen and flourished for centuries, but none so profoundly as Baghdad. Yet indeed the Round City, with its concentric walls and bustling sections, was within a network of riverine cosmopolises that shaped the profitable, artistic, and political dynamics of the region. Basra, Kufa, and Al- Anbar, formerly important in their own right, now revolved around Baghdad's gravitational pull, while lower municipalities and agreements contributed to a network that stretched from the