 Nyora kupfuurira kweiyi ndima - Muna 1330, vaSerbia vakakunda vaBulgariamunharaunda, chaizvoizvo kuchengeta nharaunda yacho muUmambo hweSerbia. Mutongi weSerbia Dejan, mumwe wevanhu vakakurumbira veSerbia Empire uye kudonha kwayo kwakatevera, pakutanga akabata dunhu rakakura mudunhu reKumanovo pasi paDushan, uye akazoitwa despot pasi paUroš V akapihwa rwizi rweUpper Struma neVelbuzhd. Pamusana pokufa kwaDejan, zvinhu zvake muŽegligovo neUpper Struma zvakapiwa vanakomana vake vaviri, Jovan Dragaš d. 1378 uye Konstantin d. 1395. Hama dzaDejanović dzakatonga dunhu rakakura kumabvazuva kweMacedonia, munzvimbo dzekumaodzanyemba dzeHumambo, uye dzakaramba dzakavimbika kuna Uroš V, kusvika 1373, apo uto raOrhan Gazi reOttoman rakamanikidza Jovan kuti azive hutongi hweOttoman. 