The Ottoman state had started out as one of a dozen Turkish Ghazi "Beyliks", roughly comparable to western European duchies, into which Anatolia (i.e., Asian Turkey, or Asia Minor) had been divided after the break-up of the Seljuk Sultanate of Ikonion (Konya) and the military demise of the Byzantine Empire. Its capital was Bursa. By 1336, it had annexed the Beylik of Karasy, its western neighbour on the coast of the Sea of Marmara, and it began to expand quite rapidly thereafter.