Final answer:
Constantinople was located at the convergence point of the Mediterranean Sea and the Black Sea, making it a crucial trade and travel hub between Europe and Asia.
Step-by-step explanation:
Constantinople was located at the convergence point of the Mediterranean Sea and the Black Sea. This strategic location made Constantinople a critical hub for trade and travel between Europe and Asia. It allowed the city to control the Bosphorus and Dardanelles straits, which connected the two seas.