From constantinople to Istanbul: The story of the transformation of a name

The official repeal of the name Constantinople and the fact that only the name Istanbul remains in use today is an important issue not only for the choice of practical and popular names, but also for historiography. This subject has been included in a few sentences in some works in general. However, this information does not give precise information about when and how the name Constantinople turned into Istanbul. This situation complicates the data on how the term Constantinople has been obsolete, and leads to the emergence of contradictory data. The thesis clarifies the issue of when the phrase Constantinople turns into the phrase Istanbul, and presents clearer information to the reader by removing this complex body of data. The Ottomans used many names when talking about Istanbul. However, with the establishment of the Republic of Turkey, we see that the use of the phrase "Istanbul" has become more common and dominant rather than the various names used when referring to Istanbul in the Ottoman period. In the studies carried out to date, it was thought that the phrase Constantinople was not converted to Istanbul with an official regulation. The sources written on the subject supported this idea. The thesis also clarifies this issue