Which city stood at the intersection of two trade routes – land from Europe to Asia and sea from

Which city stood at the intersection of two trade routes – land from Europe to Asia and sea from the Mediterranean to the Black?

This city was originally called Byzantium and was founded by the ancient Greeks. At the beginning of the 4th century A.D. the Roman emperor Constantine the Great moved the capital there and renamed it Constantinople or “New Rome” (330). From 395 to 1453, it was the capital of Byzantium (aka the Eastern Roman Empire or Romeian Empire). An exception was the period from 1204 to 1261, when it was the capital of the Latin Empire created by the Crusaders. From 1453 it became the capital of the Ottoman Empire.