The Seljuk Turks started migrating within the 11th century, and the Sultanate of Rum dominated Anatolia till the Mongol invasion in 1243, when it disintegrated into small Turkish principalities. Beginning in the late 13th law firm turkey century, the Ottomans united the principalities and conquered the Balkans, and the Turkification of Anatolia increased in the course of the Ottoman period. During the...