The Crimean interior has been ethnically diverse throughout its recorded history, changing hands numerous times, while the south coast was held continuously for most of the last two millennia by various Roman (and Eastern Roman) states. The interior was dominated by a succession of Scytho-Sarmatian, Gothic, Hunnic, Turkic, Mongol and Slavic conquests. Its south coast was Greek speaking first as Greek colonies (7th or 6th century BC and following), then under the Bosporan Kingdom (480 BC - 63 BC), Romans (47 BC -330 AD) and their successor states, the Byzantine Empire (330 AD - 1204 AD), the Empire of Trebizond (1204 AD - 1461 AD), and the independent Principality of Theodoro (1461 AD - 1475 AD). In 1475 the region was conquered by the Ottoman Turks. During the late Middle Ages a few coastal cities were ruled by Italian city states.