Kammala wannan jumlar: "Polish-Lithuanian Background:" A kusan 1362 (
Yaƙin Blue Waters) yawancin arewa maso yammacin Ukraine (ciki har da Kyiv) ya faɗi Lithuania. A cikin 1385 (Union of Krewo) an haɗa rawanin Poland da Lithuania a cikin Polish-Lithuanian Commonwealth kuma Lithuania ta zama Kirista, ƙasar Turai ta ƙarshe da ta yi hakan. A cikin 1569 (Union of Lublin), a lokacin Yaƙin Livonian, an yi haɗin gwiwa kuma an canja yawancin Ukraine daga Lithuania zuwa Poland. A cikin 1596 (Union of Brest) an yi ƙoƙari don haɗin coci. Orthodox za su riƙe al'adunsu da kuma limamai da suka yi aure yayin da suka yarda da ikon koyarwa na Paparoma. Tun da wasu 'yan Orthodox sun ƙi wannan, sakamakon ya zama an kafa coci uku maimakon biyu. Daga kusan 1610 Orthodox da Zaporozhian Cossacks sun zama kusa da juna, ta haka ne suka kara da juna daga Poland. Daga kusan 1637 akwai tawaye a ƙasashen gabas wanda ya haifar da motsi na yawan jama'a zuwa yankin Rasha kudu da Layin Belgorod (Sloboda Ukraine).