Dee ihe ọzọ maka paragraf a - Na narị afọ nke 14, Alaeze Ukwu Ottoman na-etolite etolite bụ ike na-ebili na Near East. Mgbe o merisịrị ọtụtụ akụkụ nke Anatolia, site n'ijichi
nke Gallipoli n'afọ 1354, ndị Ottoman ndị Turkey zụlitere ụkwụ ha na Balkan. Ike Ndị Kraịst nke mpaghara ahụ, ọkachasị alaeze Byzantine na-ada ada, adịghị ike ma kewaa, na-enye ohere mgbasawanye Turkey ngwa ngwa gafee mpaghara ahụ, nke ndị Ottoman n'onwe ha na ndị agha agha "ghazi" ndị Turkic na-enweghị onwe ha. Na 1369, ndị Ottoman nwere ike ijide Adrianople, obodo nke atọ kachasị mkpa nke Alaeze Ukwu Byzantine mgbe isi obodo ya bụ Constantinople na Thessalonica. Thessalonica, nke onye isi Byzantine na onye eze ukwu n'ọdịnihu Manuel II Palaiologos (), chịkwara, nyefere onwe ya na 1387 mgbe nnọchibido dị ogologo (1383<unk>1387), ya na obodo Christopolis na Chrysopolis.