How and when a west Slavic principality centred on Nitra originated in the middle Danube is a key question of medieval East Central Europe. In this book, Jan Steinhubel reconstructs the origins, history and expansion of this Nitrian Principality. Based on contemporary sources and extensive historical and archaeological literature, he traces the development of the land for 640 years (470-1110). The book illuminates Nitrian development since the decline of the Avars, its short period of independence in 9th century and later its incorporation to Great Moravia and Hungary respectively. It argues that Nitrian Principality laid the national, territorial and historical foundations of Slovakia.