 Complete the following phrase:  After the First World War, Poland and Lithuania both regained their independence but soon became immersed in territorial disputes. During the PolishSoviet War, Lithuania signed the Moscow Peace Treaty with the Soviet Union that laid out Lithuanias frontiers. This agreement gave Lithuanians control of the city of Vilnius , , the old Lithuanian capital, but a city with a majority Polish population. This heightened tension between Lithuania and Poland and led to fears that they would resume the 