Istanbul was called Constantinople before the ottomans conquered the city in the 15th century
Explanation:
Istambul is a well-known city in Turkey and now a lot of people don't know that before having this name it was called by the name of Constantinople, the change happens when the ottomans conquered in the year 1453. "Stanbulin," is the Greek for "to the city, when many signs were found on the road directing travelers it was named Islambol.
