Rambai muchinyora ndima iyi - Nhaka yeguta yakawedzera zvakanyanya payakabatana neFirst Crusade: kutora kwayo chikamu kwakaunza ropafadzo huru kune vagari veGenoa, avo vakatamira kunzvimbo zhinji muNyika Tsvene. Kukwirira kwepfuma yeGenoese kwakauya muzana ramakore rechi 13 nokupedzwa kweChibvumirano cheNymphaeum (1261) namambo weByzantine Michael VIII Palaeologus. Mukutsinhana nokubatsira vaByzantine kukundazve Constantinople, izvi zvakatungamirira kukudzingwa kwavaVenetian kubva mumigero yaitungamirira kuGungwa Dema, iro rakakurumidza kuva gungwa reGenoa. Nokukurumidza pashure pacho, muna 1284, Pisa pakupedzisira yakakundwa muHondo yeMeloria
neGenoese Navy.