A cikin 1390, Stefan Lazarević na Serbia ya yarda da suzerainty na sultan Ottoman, don haka fadada daular Ottoman ya kai iyakar kudancin Hungary.^{[57 <>]} Sigismund ya yanke shawarar shirya yaƙin yaƙi da Daular Usmaniyya.^[58] Babbar runduna wadda ta ƙunshi galibin mayaka na Faransa suka taru, amma an fatattaki 'yan Salibiyya a yaƙin Nicopolis a 1396. ^[59]Daular Usmaniyya sun mamaye sansanin Golubac a shekara ta 1427 kuma sun fara kwasar ganima a kai a kai.^[60] Yankunan arewa na masarauta (Slovakia na yanzu) sun kasance a kusan kowace shekara Czech Husites daga 1428. ^[61] .Masu wa’azi na Hussite su ma sun fara fassara Littafi Mai Tsarki zuwa Harshen Hungarian.Koyaya, an kashe duk Husites ko kuma an kore su daga Szerémség a ƙarshen 1430s.^[62]