In 1919 the first voivodeships of interwar Poland were created; in addition the capital of Warsaw had a status of an independent city-voivodeship. In the years 1919–1921 additional voivodeships were created, as borders of Poland were still fluid, with events such as the Silesian Uprisings in the West and Polish-Soviet War in the East. Eventually by 1921 Poland would have 15 voivodeships, Warsaw capital city-voivodeship and the Autonomous Silesian Voivodeship (the system known as 15+1+1).