Khmelnytsky Uprising
The Khmelnytsky Uprising, also known as the Cossack-Polish War, or the Khmelnytsky insurrection, was a Cossack rebellion that took place between 1648 and 1657 in the eastern territories of the Polish–Lithuanian Commonwealth, which led to the creation of a Cossack Hetmanate in Ukraine. Under the command of Hetman Bohdan Khmelnytsky, the Zaporozhian Cossacks, allied with the Crimean Tatars and local Ukrainian peasantry, fought against Polish domination and Commonwealth’s forces. The insurgency was accompanied by mass atrocities committed by Cossacks against the civilian population, especially against the Roman Catholic and Ruthenian Uniate clergy and the Jews, as well as savage reprisals by Jeremi Wiśniowiecki, the voivode of the Ruthenian Voivodeship. The uprising has a symbolic meaning in the history of Ukraine's relationship with Poland and Russia. It ended the Polish Catholic szlachta′s domination over the Ukrainian Orthodox population; at the same time, it led to the eventual incorporation of eastern Ukraine into the Tsardom of Russia initiated by the 1654 Pereiaslav Agreement, whereby the Cossacks would swear allegiance to the tsar while retaining a wide degree of autonomy. The event triggered a period of political turbulence and infighting in the Hetmanate known as the Ruin. The success of the anti-Polish rebellion,