The three great European powers resolved the Polish-Lithuanian question in [[Eastern Europe]] at the end of the 18th century. Such a solution was alive in practice until the end of [[World War I]]. In the interwar period, both Poland and Lithuania existed as separate [[nation state|national states]] quarreling over the [[Vilnius]] region. However, in 1939 the Fourth Partition of Poland occurred ([[Molotov-Ribbentrop Pact]]) in which four of Poland’s neighbors took participation: [[Germany]], [[USSR]], [[Slovakia]], and Lithuania. | The three great European powers resolved the Polish-Lithuanian question in [[Eastern Europe]] at the end of the 18th century. Such a solution was alive in practice until the end of [[World War I]]. In the interwar period, both Poland and Lithuania existed as separate [[nation state|national states]] quarreling over the [[Vilnius]] region. However, in 1939 the Fourth Partition of Poland occurred ([[Molotov-Ribbentrop Pact]]) in which four of Poland’s neighbors took participation: [[Germany]], [[USSR]], [[Slovakia]], and Lithuania. |