Roughly 190,000 were immigrants who had moved eastwards beginning in the late 19th century; the others were soldiers of the former tsarist army or war refugees.
Ligikaudu 190 000 olid immigrandid, kes olid ida poole liikunud alates 19. sajandi lõpust, teised oli endise tsaariarmee sõdurid või sõjapõgenikud.