Rubuta ci gaba don wannan sakin layi - Thessalonica ya kasance a hannun Ottoman har zuwa 1403, lokacin da Sarkin sarakuna Manuel II ya goyi bayan ɗan fari na Bayezid Süleyman a cikin gwagwarmayar Ottoman da ya faru bayan da aka ci nasara da Ottoman da kuma kama Bayezid a yakin Ankara
a kan Turkiyya-Mongol mai cin nasara Timur a cikin 1402. A musayar goyon bayansa, ta hanyar Yarjejeniyar Gallipoli, sarkin Byzantine ya tabbatar, a tsakanin sauran abubuwan da aka ba shi, dawo da Tasalonika, wani ɓangare na bayan gari, tsibirin Chalcidice, da yankin bakin teku tsakanin kogin Strymon da Pineios.