History of Turkey different territory of Eastern Europe and Central Asia, which fell under the control of Turkic peoples in the early medieval period. From the time when parts of what is now Turkey was conquered by Turks, the history of Turkey spans the medieval history of the Seljuk Empire, the medieval to modern history of the Ottoman Empire, and the history of the Republic of Turkey since the 1920s. The ancient history of Anatolia (Asia Minor) can be roughly subdivided into two prehistory, Ancient Near East (Bronze Age and Early Iron Age), Classical Anatolia, Hellenistic Anatolia, with Byzantine Anatolia spanning the early
Ancient Greek phonology and this cluster underwent metathesis early in the Ancient Greek period. Metathesis is likely in this case; clusters of a voiced stop and , like , do not occur in Ancient Greek, since they change to by assimilation (see below), while clusters with the opposite order, like , pronounced , do occur. Ancient grammarians, such as Aristotle in his "Poetics" and Dionysius Thrax in his Art of Grammar, categorized letters () according to what speech sounds ( 'elements') they represented. They called the letters for vowels ('pronounceable', singular ); the letters for the nasals, liquids, and , and the letters