Rubuta ci gaba don wannan sakin layi - A karni na 12, jamhuriyar ta gina babban tashar jirgin ruwa na kasa wanda yanzu aka sani da Venetian Arsenal. Gina sabbin jiragen ruwa masu ƙarfi, jamhuriyar ta mallaki gabashin Bahar Rum. An fara kasuwancin musayar farko a duniya a Venice, don tallafawa 'yan kasuwa daga ko'ina cikin Turai. Hakanan Venetians sun sami manyan gata na kasuwanci a Daular Byzantine, kuma jiragen ruwan su galibi suna ba da Daular tare da rundunar sojan ruwa. A shekara ta 1182 akwai kisan kiyashi na anti-Catholic da Kiristocin Orthodox na Constantinople suka yi
, tare da Venetians a matsayin babban manufa.