Details Details PDF BIBTEX RIS Title A European Ruler Journal title ACADEMIA. The magazine of the Polish Academy of Sciences Yearbook 2025 Issue No 1(85) Chrobry Authors Michałowski, Roman Affiliation Michałowski, Roman : Tadeusz Manteuffel Institute of History, Polish Academy of Sciences, Warsaw Keywords history ; Bolesław the Brave ; Piasts ; Medieval Europe ; St. Adalbert ; German Empire ; Otto III ; coronation of Bolesław the Brave Divisions of PAS Popularnonaukowe Coverage 7-9 Publisher Polish Academy of Sciences Date 19.09.2025 Type Article Identifier DOI: 10.24425/academiaPAS.2025.155501 Language eng <div class="test"></div>