At first this city was called Byzantium, then Constantinople; in 1930, its official name became this
- Quora [PAR] Because the Republic of Turkey declared it the official name in 1923 and the 
Turkish Postal ... Its original name was Lygos, probably a Thracian word, and 
then Byzantium when it ... After the city fell to the Turks in 1453 it was still called 
Contantinople which became ....