Ka kammala wannan magana: A ƙarni na 14, Daular Ottoman da ke tasowa ta zama mai iko a Gabas ta Tsakiya. Bayan mamaye yawancin Anatolia, tare da
kama Gallipoli a 1354, Ottoman Turks kuma sun sami kafa a cikin Balkans. Ikon kirista na yankin, musamman daular Byzantine da ke raguwa, sun kasance marasa ƙarfi da rarrabuwa, suna ba da damar fadada Turkiyya cikin sauri a duk yankin, wanda Ottoman da kansu da kuma 'yan gwagwarmayar "ghazi" na Turkiyya masu zaman kansu suka gudanar. A cikin 1369 Ottomans sun sami damar kama Adrianople, birni na uku mafi mahimmanci na Daular Byzantine bayan babban birninta Constantinople da Thessalonica. Thessalonica, wanda sarkin Byzantine da kuma sarkin da zai zo na gaba Manuel II Palaiologos (), ya mika wuya a 1387 bayan doguwar kewaye (1383<unk>1387), tare da biranen Christopolis da Chrysopolis.