The Polish-Soviet War took place from 1919 to 1921 between the Russian Soviet Federative Socialist Republic and the Second Polish Republic. Cause of the war was an attempt by the Second Polish Republic to expand their territory, and because the Russians wanted to use Polish territory as a transit route to other communist territories. The war ended in a cease-fire and resulted in a permanent border between both countries. In total around 200,000 people lost their lives in this war.
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