Agriculture developed by 4th millennium BCE; part of Roman Pannonia and Dacia, inhabited by Illyrians and Celts; held by Avars 7th-9th century, then Charlemagne; Finno-Ugrian Magyars invaded, defeated by Otto I 955; held by Mongols and Turks; Austria-Hungary formed 1867; official language is Magyar (Hungarian), though German, Slovak, Romanian and other languages are also spoken. As of 2014, Hungary is divided into 19 counties, 23 "urban counties" which are also primary subdivisions, and 1 "special city" (Budapest).