 The period of the partitions saw the reversal of the previous process of polonization, with the Lithuanian National Revival, giving new prominence to the Lithuanian language and culture.Despite federation proposals such as Międzymorze, after the First World War Lithuania chose to pursue independent statehood instead of recreating a previous union.Differences on border issues, particularly over the cities of Vilnius (Wilno) and Sejny (Seinai) led to the Polish-Lithuanian War and worsened relations for most of the interwar period.