Constantinople was the city among the following cities given in the question, that was known as the Byzantine Empire's economic and religious center. The correct option among all the options that are given in the question is the third option or the penultimate option. I hope the answer helps you.
Constantinople was founded by Constantine the Great who created the city as a new capital of the Roman Empire. After the dissolution of the Roman empire the city became the capital of the Byzantine Empire. It was the seat of the Emperor and the center of culture and commerce.
