Question: when did rome switch from latin to italian
Answer: Eventually , Bembo 's ideas prevailed , and the foundation of the Accademia della Crusca in Florence ( 1582 -- 1583 ) , the official legislative body of the Italian language led to publication of Agnolo Monosini 's Latin tome Floris italicae linguae libri novem in 1604 followed by the first Italian dictionary in 1612 .