Mezue nkebi ahịrịokwu a: E nwere ọtụtụ nnupụisi ndị Cossack mere megide Commonwealth ná mmalite narị afọ nke 17. Nnukwu n'ime ha bụ Khmelnytsky Uprising, nke ya na
A na-ewere Iju Mmiri ahụ dị ka otu n'ime ihe ndị mere ka Oge Ọchịchị Na-achị Ụwa nke Oge Ochie gwụ. Nnupụisi a mere ka ndị Cossacks pụọ na mpaghara Commonwealth nke mmetụta, naanị iji mee ka ha nọrọ n'okpuru Tsardom nke Russia n'okpuru Nkwekọrịta nke Pereyaslav (1654), ma guzobe alaeze ha dị ka Left-bank Ukraine na 1667 n'okpuru Nkwekọrịta nke Andrusovo, na Nkwekọrịta Udo Ebighị Ebi nke 1686.