2 ▁September ▁ 1 9 2 1 . ▁ ▁In ▁July ▁ 1 9 2 0 , ▁Lith u ania ▁concluded ▁the ▁Soviet – L ith uan ian ▁Peace ▁Tre aty ▁which ▁recognized ▁Vil nius ▁Region ▁to ▁Lith u ania . ▁When ▁Poland ▁achieved ▁a ▁major ▁victory ▁in ▁the ▁Battle ▁of ▁Wars aw ▁and ▁forced ▁the ▁S ovi ets ▁to ▁retre at ▁in ▁August ▁ 1 9 2 0 , ▁Lith u ani ans ▁def ended ▁their ▁new ▁borders ▁while ▁Poland ▁claimed ▁that ▁Lith u ania ▁became ▁a ▁Soviet ▁al ly ▁( see ▁the ▁Polish – L ith uan ian ▁War ). ▁Under ▁pressure ▁from ▁the ▁League ▁of ▁Nations , ▁Poland ▁signed ▁the ▁Su w ał ki ▁Ag re ement ▁on ▁ 7 ▁October ▁ 1 9 2 0 ▁but ▁immediately ▁st aged ▁the ▁Ż el ig owski ' s ▁Mut iny ▁and ▁captured ▁Vil nius ▁from ▁the ▁Lith u ani ans . ▁Polish ▁general ▁Luc jan ▁Ż el ig owski ▁proc laimed ▁creation ▁of ▁the ▁Republic ▁of ▁Central ▁Lith u ania ▁with ▁capital ▁in ▁Vil nius . ▁Lith u ania ▁and ▁Poland ▁began ▁the ▁prolong ed ▁med iation ▁at ▁the ▁League ▁of ▁Nations . ▁Pur ick is ▁and ▁a ▁deleg ation ▁of ▁the ▁Const itu ent ▁Assembly ▁visited ▁political ▁and ▁religious ▁leaders ▁in ▁London , ▁Paris , ▁Berlin , ▁Rome ▁in ▁largely ▁un success ful ▁attempt ▁to ▁gar ner ▁support ▁for ▁the ▁Lith uan ian ▁cause . ▁Lith u ani ans ▁rejected ▁plans ▁for ▁a ▁ple bis cite ▁or ▁a ▁comprom ise