Anatolia is a large peninsula in Western Asia and the westernmost protrusion of the Asian continent. It makes up the majority of modern-day Turkey. Wikipedia
Modern-day Turkey, of which Anatolia is a major part, remains a strategically importantregion for its control of the maritime passages between the Black Sea and the Mediterranean and for its significance as the point where Asia and Europe meet. … That is why Anatolia was important to the Persian Empire.
Beginning with the Bronze Age collapse at the end of the 2nd millennium BC, the west coast of Anatolia was settled by Ionian Greeks, usurping the related but earlier Mycenaean Greeks. Over several centuries, numerous Ancient Greek city-states were established on the coasts of Anatolia.
What was Istanbul called in biblical times? Byzantion (Βυζάντιον), Latinized as Byzantium, was the next name of the city. The name is believed to be of Thracian or Illyrian origin and thus to predate the Greek settlement. It may be derived from a Thracian or Illyrian personal name, Byzas.