Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Principality of Nitra or Nitrian Principality is the name for a Slavic polity, centered around Nitra. It may have been a separate principality in the 8-12th centuries that existed as an independent state and became an autonomous territory within Great Moravia, Poland and the Kingdom of Hungary ; or it may have been a nascent state that merged into Great Moravia in the 830s and lost its separate existence around 900.