Population exchange between Greece and Turkey 1923, most of the pre-war Greek population of Aegean Turkey had already fled. The exchange involved the remaining Greeks of central Anatolia (both Greek- and Turkish-speaking), Pontus and Kars. Thus of the 1,200,000 only c. 189,916 still remained in Turkey that time. In Greece, it was considered part of the events called the "Asia Minor Catastrophe" (). Significant refugee displacement and population movements had already occurred following the Balkan Wars, World War I, and the Turkish War of Independence. The convention affected the populations as follows: almost all Greek Orthodox Christians (Greek- or Turkish-speaking) of Asia Minor including the Greek
This Is What You Came For it and cut the vocals", and also confirming her previous request for secrecy as co-songwriter. The credit has since been officially changed to "Taylor Swift" in BMI's and ASCAP's entry for the song. "This Is What You Came For" is an EDM song. Gil Kaufman of "Billboard" stated that the song is "a chilled-out, joyful club track that nods to classic Chicago house from the late 1980s and early 1990s, but with a modern, poppier flavor." The song is written in the key of A minor with a tempo of 124 beats per minute. The song follows a chord progression