I begins its history.
This nation's Grand Duke Henry the Bearded was succeeded by Henry the Pious, and the baptism of Mieszko I begins its history. This home of the Piast dynasty established the principle of liberum veto for all its legislators. A leader of this non-Austria country relieved the 1683 Siege of Vienna. This nation was ruled by kings of the Jagiellon dynasty in union with Lithuania. Three agreements between this nation's neighbors partitioned it out of existence by 1800, and earlier it was where Nicolas Copernicus wrote. For 10 points, name this nation, which formerly had its capital at Krakow and was invaded on September 1, 1939 by the Nazis.
This nation's Grand Duke Henry the Bearded was succeeded by Henry the Pious, and the baptism of Mieszko
Poland [or Polska] &lt;DStobierski/MJ&gt;