The Jagiellon dynasty is part of the most significant dynasties in mid-eastern Europe. It is especially remarkable through its supra regional influence, controlling an area reaching from the Baltic Sea to the Black an Adriatic Sea.Their rule is marked by cultural and political change on the threshold from the Late Middle Ages to the Early Modern Period a period characterised by transformation. The book demonstrates how the Jagiellon dynasty influenced mid-eastern Europe?s history of the time and is the first modern work in a western European language on the topic.