The Union of Lublin: The Longest Lasting Union in European History
The Union of Lublin was an international agreement signed in 1569 between Poland and Lithuania which united the two states into one commonwealth. It brought about the formal creation of a state called the Polish-Lithuanian Commonwealth which existed well over two centuries, until it was partitioned by Prussia, Russia and Austria in 1795.
This was the longest-lasting union of states in European history – it lasted, for example, over a century longer than the Kalmar union of the Scandinavian states (1397-1523).
The Union of Lublin