when was the name constantinople changed to istanbul
Names of Istanbul Names other than استانبول (İstanbul) had become obsolete in the Turkish language during the late Ottoman/early republican periods. However, Constantinople was still used when writing the city's name in Latin script. In 1928, the Turkish alphabet was changed from Arabic script to Latin script. After that, Turkey started to urge other countries to use Turkish names for Turkish cities, instead of other transliterations to Latin script that had been used in the Ottoman times.[19] Letters or packages sent to "Constantinople" instead of "Istanbul" were no longer delivered by Turkey's PTT, which contributed to the eventual worldwide adoption of the new name.[citation needed]
Fall of Constantinople The Fall of Constantinople (Greek: Ἃλωσις τῆς Κωνσταντινουπόλεως, Halōsis tēs Kōnstantinoupoleōs; Turkish: İstanbul'un Fethi Conquest of Istanbul) was the capture of the capital of the Byzantine Empire by an invading army of the Ottoman Empire on 29 May 1453. The Ottomans were commanded by the then 21-year-old Ottoman Sultan Mehmed the Conqueror, who defeated an army commanded by Byzantine Emperor Constantine XI Palaiologos. The conquest of Constantinople followed a 53-day siege that had begun on 6 April 1453.