Pedzisa mutsara unotevera: Umambo hweByzantium, husina kukwanisa kuchengetedza guta racho pahwakanga huchiendeswa neOttoman Empire, hwakaripa muna 1423 kuRepublic of Venice. Venice yakabata guta kusvikira rabatwa mushure mekukombwa kwemazuva matatu nemutongi weOttoman Sultan Murad II, musi wa 29 Kurume 1430. VaOttoman vakanga vatotora Thessaloniki muna 1387, asi vakairasa mushure mekukundwa kwavo mu
Hondo yeAnkara neTamerlane muna 1402, apo maOttoman akanga asisina simba akamanikidzwa kudzorera nzvimbo dzinoverengeka kuvaByzantine.