The city is founded by the emperor Constantinos. the first emperor of byzantium. he called Constantinupolis. so the original name of the city is constantinupolis
there is a song about that you can listen : https://www.youtube.com/watch?v=tk8U5XVpTCc https://www.youtube.com/watch?v=pUgfYSbcBAk https://www.youtube.com/watch?v=HSjB3rPRA38 They migth be Giants -istanbul not constantinople istanbul was constantinople now it's istanbul, not constantinople been a long time gone, constantinople now it's turkish delight on a moonlit night every gal in constantinople lives in istanbul, not constantinople so if you've got a date in constantinople she'll be waiting in istanbul even old new york was once new amsterdam why they changed it i can't say people just liked it better that way so take me backto constantinople no, you can't go back to constantinople been a long time gone, constantinople why did constantinople get the works? that's nobody's business but the turks!
well yes. but they doesnt change it because they liked it but because they occupied it. I think this song is a little nationalistic.
yes it seems a little nationalistic but the song is not written by turks ,it is american song.also istanbul is very important city for muslims because The Prophet muhammed predicted the conquest of Istanbul, according to an authentic narration, the Prophet, declared: "Surely, Constantinople (Istanbul) will be conquered (by my community); how blessed the commander who will conquer it, and how blessed his army." He thus foretold the conquest of Istanbul by Muslims, and indicated the high spiritual rank of Fatih Sultan Mehmed, the Conqueror, and the virtuousness of his army. What he foretold took place centuries later.