On 10 January 1569 in the castle of Lublin the sessions of the Sejm began preceding the conclusion of the Polish-Lithuanian Union, which created a geopolitical superpower.

The aim of the Seimas was to unite permanently the Crown and the Grand Duchy of Lithuania. A new state was created, which survived until the 18th century. - The Polish-Lithuanian Commonwealth.

- The past teaches us that when we were together, we were great and strong," the Speaker of the Seimas Marek Kuchcinski said last year at the Seimas of Lithuania. - We want to restore the activity of the parliamentary assembly of Poland and Lithuania; today is a signum temporis for parliamentary diplomacy, especially in our part of Europe," said the Speaker.

painting: Jan Matejko "Union of Lubesa"Marek Kuchciński, Speaker of the Sejm, with Viktoras Pranckietis, President of Seimas, in Warsaw during the celebrations of the 550th anniversary of Polish parliamentarism