Its geographic position and protective city walls.
Constantinople, or Byzantium, as it was originally named, had always been a center of trade in that part of the world. That's one of the reasons Constantine chose it for his capital.
Constantinople
Constantinople fell to the Ottoman Turks and became the capital of the Ottoman Empire and the centre of trade of this empire.
The city that was the center of trade with Constantinople was Venice. Its strategic location and extensive network of waterways allowed Venice to become a major hub for commerce between Europe and the Byzantine Empire. The city's merchants played a crucial role in facilitating trade in goods such as spices, silk, and other luxury items. Venice's wealth and influence grew significantly due to its trade relations with Constantinople.
Because of its capital Constantinople had a cultural diffusion. This capital Constantinople was a center of trade. and was located in the crossroads of Europe and Asia
Venice
Venice
Venice
It was located at the entrance of the Black Sea
Constantinople was a major center of culture, learning, and, most of all, trade.
It was a trade center conveniently located between Asia and Europe.