page_title: Lithuania–Poland relations
section_title: Country comparison
hierarchical_section_title: Lithuania–Poland relations / Country comparison
caption_attribution_description: Polski: Pałac pod Karczochem w Warszawie English: Pod Karczochem Palace in Warsaw
context_page_description: Polish–Lithuanian relations date from the 13th century, after the Grand Duchy of Lithuania under Mindaugas acquired some of the territory of Rus' and thus established a border with the then-fragmented Kingdom of Poland. Polish-Lithuanian relations subsequently improved, ultimately leading to a personal union between the two states. From the mid-16th to the late-18th century Poland and Lithuania merged to form the Polish–Lithuanian Commonwealth, a state that was dissolved following their partition by Austria, Prussia and Russia. After the two states regained independence following the First World War, Polish-Lithuanian relations steadily worsened due to rising nationalist sentiments. Competing claims to the Vilnius region led to armed conflict and deteriorating relations in the interwar period. During the Second World War Polish and Lithuanian territories were occupied by both the Soviet Union and Nazi Germany, but relations between Poles and Lithuanians remained hostile. Following the end of World War II, both Poland and Lithuania found themselves in the Eastern Bloc, Poland as a Soviet satellite state, Lithuania as a Soviet republic.
caption: Embassy of Lithuania in Warsaw
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