Example image of eyePlorer eyePlorer map for 'Union of Lublin': Crown of the Kingdom of Poland Elective monarchy Grand Duchy of Lithuania Jagiellon dynasty Personal union Real union Sigismund II Augustus Royal Prussia 1569 July 1 Lublin Poland Polish–Lithuanian Commonwealth Diet (assembly) List of Polish monarchs Sejm of the Republic of Poland Senate Polish–Lithuanian union Tsardom of Russia Culture of Poland Magnate Livonian War Muscovite–Lithuanian Wars Szlachta Lithuanian people March 1 Mikołaj "the Red" Radziwiłł Vilnius Vilnius Voivodeship Kiev March 26 Podlachia Podolia Volhynia Ukraine Ivan Chodkiewicz Jan Karol Chodkiewicz Constitution of May 3, 1791 Federation July 4 June 28 Lublin Castle Stanisław August Poniatowski Unitary state Partitions of Poland Catholicism Orthodox Church Polish language Polonization Social class