The division of the Albanian-populated lands into small, quarreling fiefdoms ruled by independent feudal lords and tribal chiefs made them easy prey for the Ottoman armies. In 1385, the Albanian ruler of Durrës, Karl Thopia, appealed to the sultan for support against his rivals, the Balsha noble family. An Ottoman force quickly marched into Albania along the Via Egnatia and routed Balsha II in the Battle of Savra. Some of the Albanian Principalities soon started to become vassals of the Ottoman Empire after 1420. Gjirokastra became the county town of the Sanjak of Albania in 1420. and than Kruja was established as the center of Sanjak of Albania after Gjergj Arianiti defeated the Ottomans between 1431 and 1435.