Pagan ruler of the Polans converts to Christianity, establishing statehood.
Poland is officially recognized as a kingdom, marking its statehood.
Poland cements its association with Lithuania, becoming a significant European power.
Polish-Lithuanian Commonwealth adopts Europe's first modern constitution.
Poland regains independence following the end of World War I.
Germany and the Soviet Union invade Poland, marking the start of World War II.
The Solidarity movement leads to the dissolution of the communist government.