<Li> Niccolò Machiavelli and other Florentines preferred the version spoken by ordinary people in their own times . </Li> <Li> The courtiers, like Baldassare Castiglione and Gian Giorgio Trissino, insisted that each local vernacular contribute to the new standard . </Li> <P> A fourth faction claimed the best Italian was the one that the papal court adopted, which was a mix of Florentine and the dialect of Rome . 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 . </P> <P> The continual advancements in technology plays a crucial role in the diffusion of languages . After the invention of the printing press in the fifteen century, the number of printing presses in Italy grew rapidly and by the year 1500 reached a total of 56, the biggest number of printing presses in all of Europe . This allowed to produce more pieces of literature at a lower cost and as the dominant language, Italian spread . </P>

When did rome switch from latin to italian