The Commonwealth of the Crown of the Polish Kingdom and the Grand Duchy of Lithuania
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Polish-Lithuanian Commonwealth (1619) compared with today's borders Legend ██ Kingdom of Poland ██ Duchy of Prussia, Polish fief ██ Grand Duchy of Lithuania ██ Duchy of Courland, Lithuanian fief ██ Livonia ██ Swedish and Danish Estonia |
 Polish-Lithuanian Commonwealth in 1635 |
 Polish-Lithuanian Commonwealth in 1648 |