Why did Syria and Iraq become important centers of early Islamic artistic development?

Syria and Iraq became primary centers of early Islamic artistic development largely because they served as the successive seats of power for the empire’s two foundational dynasties.1

• Political Centers: Syria was the heart of the Umayyad dynasty, with Damascus serving as the capital of a vast, expanding empire. Following the rise of the Abbasid dynasty, the political focus shifted to Iraq, where the new capital of Baghdad was established.123
• Demographic Influx: These two regions experienced the largest influx of Muslims, which facilitated the concentration of resources and the establishment of a dominant new aesthetic taste.1
• Cultural Synthesis: As the empire expanded, it inherited sophisticated pre-Islamic artistic traditions from the Roman Empire and Iran. Because the Muslim conquests were accompanied by minimal destruction, these existing systems of visual forms were passed on to the new culture.45
• Innovation: Iraq, in particular, became a hub for creative innovation, where a uniquely Islamic visual koine—a commonly understood system of forms—was derived and subsequently spread throughout the Islamic world.5