The first bishopric here was at Poznan, and Boleslaw the Second fought with bishop Stanislaus, who developed a cult here.
Ibrahim ibn Ya'kub claimed this state ruled by the Piast dynasty was the most powerful of a particular Eastern European ethnic group. The first bishopric here was at Poznan, and Boleslaw the Second fought with bishop Stanislaus, who developed a cult here. Its union with Lithuania occurred during the Jagiellonian dynasty that ruled here, and their combined forces defeated the Teutonic Knights at Tannenburg. Partitioned by Catherine the Great, for 10 points, name this nation that was invaded by the Nazis to spark World War Two, home to the Warsaw Ghetto.
Ibrahim ibn Ya'kub claimed this state ruled by the Piast dynasty was the most powerful of a particular Eastern European ethnic group.
Republic of Poland [or Rzeczpospolita Polska]