Italian is a Romance language of the Indo-European language family. Italian descended from the Vulgar Latin of the Roman Empire and, together with Sardinian, is by most measures the closest language to it of the Romance languages. Italian is an official language in Italy, Switzerland (where it is the first language in Canton Ticino and in the districts of Moesa and Bernina in Canton Graubünden), San Marino and Vatican City. It has official minority status in western Istria (Croatia and Slovenia). It formerly had official status in Albania, Malta, Monaco, Montenegro (Kotor) and Greece (the Ionian Islands and the Dodecanese), and is generally understood in Corsica (due to its close relationship with the Tuscan-influenced local language) and Savoie. It also used to be an official language in the former Italian East Africa and Italian North Africa, where it still plays a significant role in various sectors. Italian is also spoken by large expatriate communities in the Americas and Australia. Italian is included under the languages covered by the European Charter for Regional or Minority languages in Bosnia and Herzegovina and in Romania, although Italian is neither a co-official nor a protected language in these countries. Many speakers of Italian are native bilinguals of both Italian (either in its standard form or regional varieties) and other regional languages.