 Nyorera kupfuurira kweiyi ndima - Makore okupedzisira ezana ramakore rechigumi nemana akaratidzirwa netyisidziro yeTurkey inowedzera. Iyi tyisidziro yakanga isiri kubva kuTurkmen emirates duku dzaipoteredza Trebizond, asi kubva kumhuri yeOsmanli, simba idzva reTurkey raibva kumadokero kweAnatolia iro raizokurumidza kusimbisa Umambo hweOttoman. Kunyange zvazvo kuwedzera kwavo kwakambomiswa naTamerlane muHondo yeAnkara muna 1402, pakazosvika makore ekuma1430 maOttoman akanga awanazve hupfumi hwavo, achitora zvikamu zvakakura zveGreece uye pakupedzisira achitora Constantinople pachayo musi wa29 Chivabvu 1453. Manuel III 13901417, mwanakomana wechipiri uye mutsivi waAlexios III, akanga azvibatanidza naTamerlane, asi mukundi ane simba akakurumidza kusiya Anatolia, uye umambo hwaakanga avaka hwakaparara norufu rwake. Mwanakomana wake Alexios IV 14171429 akaenderera mberi netsika dzemuchato wezvematongerwo enyika nekuroora vanasikana vake vaviri kuvatongi vemadzimambo maviri akavakidzana echiMuslim: Jihan Shah, khan weKara Koyunlu, naAli Beg, khan weAk Koyunlu. Mwanasikana wake mukuru Maria akava mudzimai wechitatu waMambo weByzantium John VIII Palaiologos. 