Britannica, IstanbulArchiviato il 18 dicembre 2007 in Internet Archive.:When the Republic of Turkey was founded in 1923, the capital was moved to Ankara, and Constantinople was officially renamed Istanbul in 1930.
Britannica, IstanbulArchiviato il 18 dicembre 2007 in Internet Archive.:When the Republic of Turkey was founded in 1923, the capital was moved to Ankara, and Constantinople was officially renamed Istanbul in 1930.