When there was Italian?

Very long time of Italian simply did not exist, inhabitants of the Apenninsky peninsula considered themselves as successors of Romans and believed that speak Latin. Though already by the end of the first millennium language of local commoners called vulgar or spoiled Latin. When there was modern Italian? Now Italian speak more than 64 million 819 thousand people in the world. Except Italy, this language is official to Switzerland, San Marino and Vatican City, and also in border with Italy regions Slovenia and Croatia. However at Italian there is a lot of...