He annexed the territory of Karesi beylik, another beylik to the south of Ottoman beylik.[1] His son Murad I established hegemony on most of the beyliks in Anatolia mainly by diplomacy (dowery, purchase etc.) [2] Bayezid I continued expansion policy by harsher methods. At the end of the 14th century most beyliks were incorporated into Ottoman realm. However, in 1402, Beyazıt was defeated by Timur, a Turkic conqueror from Turkestan in the Battle of Ankara and the newly annexed beyliks (except Karesi) regained their independence.[3] During the reigns of Mehmed I, Murad II and Mehmed II (the Conqueror), Ottomans reconquered all beyliks with the exception of two, which were the vassals of Mamluk Empire in Egypt.