Mezue ahịrịokwu na-esonụ: "Polish-Lithuanian Background:" N'ihe dị ka 1362 (
Agha nke Blue Waters) ọtụtụ n'ime ebe ugwu ọdịda anyanwụ Ukraine (gụnyere Kyiv) dara Lithuania. Na 1385 (Union of Krewo) okpueze nke Poland na Lithuania sonyere na Polish-Lithuanian Commonwealth na Lithuania ghọrọ Christian, mba Europe ikpeazụ ime otú ahụ. Na 1569 (Union nke Lublin), n'oge Agha Livonian, e mere njikọ chiri anya ma nyefee ọtụtụ Ukraine site na Lithuania na Poland. Na 1596 (Union of Brest) a nwara ime ka chọọchị dịrị n'otu. Ndị Ọtọdọks ga-ejigide ememe okpukpe ha na ndị ụkọchukwu lụrụ di ma na-anakwere ịbụisi nke popu n'ihe banyere ozizi. Ebe ọ bụ na ụfọdụ ndị Ọtọdọks jụrụ nke a, ihe si na ya pụta bụ na e guzobere chọọchị atọ kama ịbụ abụọ. Site n'ihe dị ka afọ 1610, ndị Orthodox na Zaporozhian Cossacks ghọrọ ndị ha na ha dịkwu ná mma, si otú ahụ na-eme ka ha abụọ ghara ịdị na Poland. Site n'ihe dị ka afọ 1637 enwere nnupụisi na mpaghara ọwụwa anyanwụ nke dugara n'ịkwaga nke ndị bi na mpaghara Russia na ndịda nke Belgorod Line (Sloboda Ukraine).