For 300 years the greatest power in Eastern Europe was the union between the kingdom of Poland and the grand duchy of Lithuania, one of the longest-lasting political unions in European history. This volume is the first detailed study of the making of that union ever published in English. This volume meticulously traces the history of the PolishLithuanian political relationship step by step, over two centuries. It is the first exhaustive narrative of these events in English ... a useful contribution to debates on the PolishLithuanian union, and it will bring those debates to a much wider audience, offering fresh perspectives for historians in central Europe to mull over ... This book is the fruit of considerable labour ... and will be read with interest across central and northern Europe.