text: This city's Jewish Ghisolfi family helped found the Bank of St. George, which was granted control over colonies in Gazaria and the Taman Peninsula.
full_question: This city's Jewish Ghisolfi family helped found the Bank of St. George, which was granted control over colonies in Gazaria and the Taman Peninsula. Constantinople's Galata Tower was built by traders from this city, whose colony of Caffa may have been an entry point for the bubonic plague into Europe. An admiral from this city led the allied fleet that lost to the Ottomans at the Battle of Preveza. (*) Crossbowmen from this city, which was once led by Andrea Doria, were outshot by English longbowmen at the Battle of Crecy. An explorer born in this city appealed to Ferdinand and Isabella for financial support for his four voyages to the New World. For 10 points, name this Italian city, the birthplace of Christopher Columbus, a major maritime rival of Venice.
first_sentence: This city's Jewish Ghisolfi family helped found the Bank of St. George, which was granted control over colonies in Gazaria and the Taman Peninsula.
raw_answer: Genoa [or Republic of Genoa]