Empire of Greater Bohemia and Poland (Premyslid Bohemia)

Empire of Greater Bohemia and Poland was created in 1306 by Wenceslaus III as follow up state to Kingdom of Bohemia and Kingdom of Poland after he defeated Wladyslaw I in Poland - Bohemia War. He became emperor in 1306 but was officaly crowned by Henry VII of Luxembourg in 1308 when he became the Holy Roman Emperor. It was only state in this part of Europe till its offital destruction in 1587 and reclassifaction as the Duchy of Bohemia and Stewart I. Prior to this there were 3 duchies in the Empire: Duchies of Warsaw, Pilsen and Opavia.