When did the Ottomans conquer the Byzantine Emprire ?
In February 1423 , a shaky truce was brokered between Zaccaria , Tocco and the Byzantines by the Venetians , who were eager to establish a common front against the Ottomans , but this did not prevent a major Ottoman raid into the peninsula by Turahan Bey in summer 1423 , nor did it stop the aggressive Byzantine despot , Theodore II Palaiologos , from raiding Venetian territory and even capturing Centurione Zaccaria in June 1424 .