The Kościuszko Uprising was an uprising against Imperial Russia and the Kingdom of Prussia led by Tadeusz Kościuszko in the Commonwealth of Poland and the Prussian partition in 1794. It was a failed attempt to liberate the Polish-Lithuanian Commonwealth from Russian influence after the Second Partition of Poland (1793) and the creation of the Targowica Confederation.
By the early 18th century, the magnates of Poland and Lithuania controlled the state – or rather, they managed to ensure that no reforms would be carried out that might weaken their privileged status (the "Golden Freedoms"). Through the abuse of the liberum veto rule which enabled any deputy to paralyze the Sejm (Commonwealth's parliament) proceedings, deputies bribed by magnates or foreign powers or those simply content to believe they were living in an unprecedented "Golden Age", paralysed the Commonwealth's government for over a century.
The idea of reforming the Commonwealth gained traction since the mid-17th century; it was however viewed with suspicion not only by its magnates but also by neighboring countries, which had been content with the deterioration of the Commonwealth and abhorred the thought of a resurgent and democratic power on their borders. With the Commonwealth Army reduced to around 16,000, it was easy for its neighbors to intervene directly (The Imperial Russian Army numbered 300,000; The Prussian Army and Imperial Austrian Army, 200,000 each).