 Ramba uchinyora ndima iyi - Muzana remakore pashure porufu rwaOsman I, kutonga kweOttoman kwakatanga kutambanukira kuMabvazuva kweMediterranean neBalkans. Mwanakomana waOsman, Orhan, akatora guta reBursa muna 1326 uye akariita guta guru idzva renyika yeOttoman. Kuwa kweBursa kwakareva kurasikirwa nokutonga kweByzantium kuNorthwestern Anatolia. Guta rinokosha reTesaronika rakakundwa kuvaVenetian muna 1387. Kukunda kwevaOttoman muKosovo muna 1389 kwakanyatsoratidza kuguma kwesimba reSerbiamunharaunda yacho, achigadzirira nzira yokuwedzera kweOttoman kupinda muEurope. Hondo yeNicopolis muna 1396, inonzi nevakawanda hondo yokupedzisira yakakura yeMiddle Ages, yakatadza kumisa kufambira mberi kwevaOttoman Turks vakanga vakunda. Nokupararira kwokutonga kweTurkey muBalkans, kukunda Constantinople kwakava chinangwa chinokosha. Humambo hwacho hwaidzora dzinenge nyika dzose dzaimbova dzeByzantium dzakanga dzakapoteredza guta racho, asi vaByzantium vakazorodzwa kwenguva pfupi apo Timur akapinda muAnatolia muHondo yeAnkara muna 1402. Akatora Sultan Bayezid I somusungwa. Kubatwa kwaBayezid I kwakakanganisa vaTurkey. Hurumende yakapinda muhondo yevagari vemo yakatora nguva kubva muna 1402 kusvika muna 1413, sezvo vanakomana vaBayezid vakarwa pamusoro penhaka. Yakaguma apo Mehmed I akabuda samambo uye akadzorera simba reOttoman, achigumisa Interregnum. 