Whakaotihia te rerenga e whai ake nei: Ko te Rangatira Nui o Kiev, ko Roman te Nui, i whakakotahi i nga rangatiratanga o Halych me Volhynia ki roto i te kawanatanga kotahi i te tauwhitinga o te rautau 13. Whai muri i te whakangaromanga i mahia e te
Ko te whakaekenga a Mongol o Kievan Rus' (1239 ki 1241), i akina a Prince Danylo Romanovych ki te oati i te pono ki a Batu Khan o te Golden Horde i te 1246 pera i era atu rangatira o Rus. I kaha ia ki te whakakore i tana ao i te ioka Mongol, ma te whakatata atu ki te Hauauru o Uropi, engari i te wa i whakahaua ai ia e Batu Khan ki te whakangaro i nga taiepa o ona taone rawhiti i mahia e ia. I karaunatia ia "Rex Rusiae" e tetahi karere a te pope i te 1253, ka noho hei rangatira Orthodox o te Vatican. I whakamātau hoki ia ki te whakatū hononga hōia ki ētahi atu rangatira Pākehā, engari kāore i angitu. Ko te wikitoria a Polani o te rangatiratanga i te tau 1349 i mutu ai tana mana ki te Golden Horde engari i mutu ano hoki tana mana motuhake; ko te rangatiratanga o Galicia i pau katoa i a Polani Katorika. I te wa i whakauruhia ai, i tangohia e te Kingi o Polani a Casimir III te Nui te taitara o te Kingi o Polani me te rangatira o Ruthenia, a, i hurihia te rohe ki te Rohe o Ruthenia () i te 1434.