The Ukrainian Cossacks were a group of semi-nomadic warriors and farmers who emerged in the 15th century in the region of Ukraine. They played a significant role in the history of Eastern Europe, known for their military skills, democratic governance, and unique culture. The Cossacks formed communities called sich, where they practiced self-governance and maintained a strong sense of identity. Cossacks were often involved in conflicts against various powers, including the Polish-Lithuanian Commonwealth and the Russian Empire. They are celebrated for their contributions to Ukrainian history and folklore, symbolizing freedom and resistance. Their legacy continues to influence Ukrainian culture today.