Final answer:
Baghdad was economically important due to the shifting center of the Islamic world and its strategic location for trade and culture.
Step-by-step explanation:
The city of Baghdad was economically important in part because the center of the Islamic world was shifting eastward after the Abbasid Revolution. As the Abbasid state grew wealthier and more powerful, Baghdad became a prominent center of trade and culture. It was strategically located on the banks of the Tigris River in Mesopotamia, which had historically been a land of remarkable fertility and supported early human civilizations.