Ukraine and Poland Went to War in 1919
Lviv or Lwów are two names for the same city that was known as Lemberg until 1919. The Poles considered it as one of their most important cultural and political centers, the Ukrainians too. And so, in the aftermath of the dissolution of the Austro-Hungarian Empire, the question of who would control this city led to conflict: The Polish-Ukrainian War.
Credit to : The Great War