▁Uk ra ini ans ▁were ▁generally ▁quite ▁ant agon istic . ▁When ▁Ukrain ian ▁historian ▁My kh ail o ▁H rus he v sky i ▁moved ▁from ▁K iev ▁to ▁L viv ▁in ▁ 1 8 9 4 ▁he ▁was ▁surprised ▁to ▁see ▁that ▁Pol es ▁there ▁were ▁host ile ▁to ▁the ▁Ukrain ian ▁cause . ▁ ▁During ▁the ▁First ▁World ▁War ▁and ▁Revolution ▁ ▁Within ▁the ▁Russian ▁Empire ▁ ▁During ▁the ▁first ▁world ▁war ▁over ▁ 4 0 , 0 0 0 ▁Polish ▁refuge es ▁fle eing ▁the ▁central ▁powers ▁settled ▁in ▁K iev . ▁ ▁After ▁the ▁Revolution , ▁the ▁main stream ▁Polish ▁political ▁organization , ▁the ▁Polish ▁Democratic ▁Center ▁Party , ▁supported ▁the ▁Ukrain ian ▁national ▁movement ' s ▁post - re volution ary ▁government , ▁the ▁Ukrain ian ▁Central ▁R ada . ▁ ▁One ▁of ▁the ▁Polish ▁Democratic ▁Center ▁Party ▁leaders , ▁Mie cz ys ław ▁M ick iew icz , ▁was ▁appointed ▁the ▁head ▁of ▁the ▁Ukrain ian ▁government ' s ▁Ministry ▁of ▁Polish ▁Affairs . ▁ ▁In ▁November ▁ 1 9 1 7 ▁a ▁Polish ▁University ▁College ▁was ▁established ▁in ▁K iev . ▁ ▁The ▁advance ▁of ▁the ▁B ols he vik ▁arm ies , ▁the ▁Polish – S ov iet ▁War ▁of ▁ 1 9 1 9 - 1 9 2 1 , ▁and ▁the ▁incorpor ation ▁of ▁these ▁Ukrain ian ▁lands ▁into ▁the ▁USS R , ▁led ▁to ▁a ▁massive ▁ex od us ▁of ▁Pol es , ▁particularly ▁land own ers ▁and ▁intellig ents ia