Northern Crusade Eastern Schism Reformation Introduction of Christianity in Lithuania Introduction of Christianity in Lithuania Union of Brest

Introduction of a new calendar Mutual cultural influence Construction of new cities Ban on the use of Lithuanian Mutual cultural influence Introduction of Polish as the official language

Casimir the Great John III Sobieski Stephen Báthory Sigismund the Old Władysław Jagiełło Władysław Jagiełło

Around 1370 1360 1390 1380 1400 Around 1370

Sulima Gryf Leliwa Jastrzębiec Korczak Sulima

Religious unification Territorial division Introduction of absolute monarchy End of civil wars Increase in Poland's prestige Increase in Poland's prestige

July 15, 1410 June 15, 1410 June 12, 1410 July 15, 1410 August 15, 1410 July 12, 1410

Increase in military strength of Poland and Lithuania Reduction in the number of troops End of wars with neighbors Increase in military strength of Poland and Lithuania Introduction of new war technologies Construction of new fortresses

Ban on the use of Lithuanian Introduction of Polish as the official language Mutual cultural influence Introduction of a new calendar Mutual cultural influence Construction of new cities

Participation in peace negotiations Introduction of the Reformation Territorial division Religious unification Participation in peace negotiations Coronation as king