What city was the most important learning and trade center during alexander's time?

During Alexander the great's time, the most important learning and trade center was the city of Alexandria in Egypt. Founded by Alexander in 331 BCE, Alexandria became a hub of scholarship, culture, and commerce, housing the famous Library of Alexandria and the Great Lighthouse. Its strategic location along the Mediterranean made it a vital point for trade and the exchange of ideas, influencing the Hellenistic world.