Principality of Nitra
The Principality of Nitra (Slovak: Nitrianske kniežatstvo, Nitriansko, Nitrava, lit. 'Duchy of Nitra, Nitravia, Nitrava') also known as the Duchy of Nitra, was a West Slavic polity encompassing a group of settlements that developed in the 9th century around Nitra, in present-day Slovakia. Its history remains uncertain because of a lack of contemporary sources.