The Abbasid empire advanced Islamic civilization more than the Umayyad empire. They had a great establishment of resources that helped their empire grow. The population of Bagdad increased over two million during this time (SAS Bagdads under the Abbasids). Having a great resources not only produced better living, but also provided jobs and opportunities. This allowed the Islamic civilization to be able to branch out and create better living environments, it was a modernized life compared to what they were used to. Though the Umayyad empire didn't offer as much to the Islamic civilization as the Abbasid empire, a large impact was still made in the civilzation through their empire.
