Fadada daular Usmaniyya ta kai Danube a wajen 1390. Daular Usmaniyya ta mamaye Wallachia a shekara ta 1390 suka mamaye Dobruja a 1395. Wallachia ya ba daular Usmania kyauta a karon farko a 1417, Moldavia a 1456. Duk da haka, ba a sami wasu shugabannin biyu ba. An bukaci sarakunansu ne kawai su taimaka wa Daular Usmaniyya a yakin da suke yi na soja.Manyan sarakunan Romania na ƙarni na 15 - Vlad the Impaler of Wallachia da Stephen the Great na Moldavia - sun ma iya cin nasara akan Ottoman a manyan yaƙe-yaƙe.A Dobruja, wanda aka haɗa a cikin Silistra Eyalet, Nogai Tatars sun zauna kuma kabilun Gypsy na yankin sun musulunta.Rugujewar daular Hungary ta fara ne da yakin Mohács a ranar 29 ga watan Agustan shekarar 1526. Daular Usmaniyya ta halaka sojojin sarauta sannan Louis II na Hungary ya halaka.A shekara ta 1541, dukan yankin Balkan da arewacin Hungary sun zama lardunan Ottoman.Moldavia, Wallachia, da Transylvania sun kasance ƙarƙashin mulkin Ottoman amma sun kasance masu cikakken 'yancin kai har zuwa karni na 18, suna da 'yancin kai na ciki.