Baghdad is located in the heart of the Middle East, at the intersection of the Tigris and Euphrates rivers. This made it a natural hub for trade and commerce, and it quickly became one of the most important cities in the region. Baghdad was also the capital of the Abbasid caliphate, which was one of the most powerful empires in history.
Damascus is also a strategically important city, as it is located at the crossroads of several major trade routes. It is also the capital of Syria, which has a long and rich history. However, Damascus is not as well-suited for trade as Baghdad, as it does not have access to the same water resources.
Overall, Baghdad is the better location for a capital city due to its strategic location, access to water resources, and historical significance.