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[[File:166px-BChmielnicki.jpg|thumb|200px|[[Bohdan Khmelnytsky]] led the famous revolt against the Polish Commonwealth in 1648-1654]]

[[File:166px-BChmielnicki.jpg|thumb|200px|[[Bohdan Khmelnytsky]] led the famous revolt against the Polish Commonwealth in 1648-1654]]

The rebellions climaxed in 1648-1654 in a popular uprising, accompanied by widespread pogroms against Jews, led by the Cossack hetman (general) [[Bohdan Khmelnytsky]] (1595-1657).<ref> This led to the birth of Ukraine through the Pereiaslav Agreement of 1654, as it became based in the Dnipropetrovsk and Kirovohrad oblasts. He is called Bogdan Khmelnitsky in Russian and Bogdan Chmielnicki in Polish.</ref> Khmelnytsky's victory over Poland led to a Cossack "state," the hetmanate.<ref>The Cossacks formed a military regime but most historians say the hetmanate was not a fully formed state, as it lacked borders, stable laws, an administrative apparatus or an ethnic population base. Apart from Russia it did not seek diplomatic recognition through the exchange of ambassadors.</ref> As the creator of the first quasi-independent Cossack state in the 16th century, Khmelnitsky became immortalized in Ukrainian national sentiment. In the Communist era Moscow bolstered his status.  The exploits of Khmelnitsky and the Cossacks became the focus of numerous ceremonial acts, exhibitions and dedications.  Since 1991, however, Ukrainian scholars are more divided over the issue of whether he sold out the national interest to Russia.<ref>Serhii Plokhy, "The Ghosts of Pereyaslav: Russo-Ukrainian Historical Debates in the Post-soviet Era." ''Europe-Asia Studies'' 2001 53(3): 489-505. Fulltext: [http://www.jstor.org.proxy.cc.uic.edu/view/09668136/ap030066/03a00050/0 in Jstor]; Zenon E. Kohut, "In Search of Early Modern Ukrainian Statehood: Post-Soviet Studies of the Cossack Hetmanate." ''Journal of Ukrainian Studies'' 1999 24(2): 101-112. Issn: 0228-1635 not online</ref>

The rebellions climaxed in 1648-1654 in a popular uprising, accompanied by widespread pogroms against Jews, led by the Cossack hetman (general) [[Bohdan Khmelnytsky]] (1595-1657).<ref>He is called Bogdan Khmelnitsky in Russian and Bogdan Chmielnicki in Polish.</ref> This led to the birth of Ukraine through the Pereiaslav Agreement of 1654, as it became based in the Dnipropetrovsk and Kirovohrad oblasts. Khmelnytsky's victory over Poland led to a Cossack "state," the hetmanate.<ref>The Cossacks formed a military regime but most historians say the hetmanate was not a fully formed state, as it lacked borders, stable laws, an administrative apparatus or an ethnic population base. Apart from Russia it did not seek diplomatic recognition through the exchange of ambassadors.</ref> As the creator of the first quasi-independent Cossack state in the 16th century, Khmelnitsky became immortalized in Ukrainian national sentiment. In the Communist era Moscow bolstered his status.  The exploits of Khmelnitsky and the Cossacks became the focus of numerous ceremonial acts, exhibitions and dedications.  Since 1991, however, Ukrainian scholars are more divided over the issue of whether he sold out the national interest to Russia.<ref>Serhii Plokhy, "The Ghosts of Pereyaslav: Russo-Ukrainian Historical Debates in the Post-soviet Era." ''Europe-Asia Studies'' 2001 53(3): 489-505. Fulltext: [http://www.jstor.org.proxy.cc.uic.edu/view/09668136/ap030066/03a00050/0 in Jstor]; Zenon E. Kohut, "In Search of Early Modern Ukrainian Statehood: Post-Soviet Studies of the Cossack Hetmanate." ''Journal of Ukrainian Studies'' 1999 24(2): 101-112. Issn: 0228-1635 not online</ref>

===Polish and Russian control===

===Polish and Russian control===