<prompt> Ramba uchinyora ndima iyi - Muzana remakore pashure porufu rwaOsman I, kutonga kweOttoman kwakatanga kuwedzera muAnatolia neBalkan. Kurwisana kwokutanga kwakatanga panguva yehondo dzeByzantine-Ottoman, dzakarwiwa muAnatolia mukupera kwezana ramakore rechi13 dzisati dzapinda muEurope pakati pezana ramakore rechi14, dzatevera nehondo dzeBulgaria-Ottoman  <response>: uye hondo dzeSerbia neOttoman dzakarwiwa kutanga pakati pezana remakore rechi14. Nguva iyi yakawanda yakanga ichiratidzwa nokuwedzera kweOttoman muBalkans. Mwanakomana waOsman, Orhan, akatora guta rokuchamhembe kwakadziva kumadokero reAnatolia rinonzi Bursa muna 1326, achiriita guta guru idzva renyika yeOttoman uye achibvisa kutonga kweByzantium munharaunda yacho. Guta rechiteshi chengarava rinokosha reThessaloniki rakatorwa kuvaVenetian muna 1387 ndokuparadzwa. Kukunda kwevaOttoman muKosovo muna 1389 kwakaratidza kuguma kwesimba reSerbia mudunhu iri, kuchigadzirira nzira yekuwedzera kwevaOttoman muEurope. Hondo yeNicopolis yeBulgaria Tsardom yeVidin muna 1396, inoonekwa zvakanyanya senzira yekupedzisira yakakura yeMiddle Ages, yakatadza kumisa kufambira mberi kwevakakunda veOttoman Turks. 