Rusyns and Ukrainians in Czechoslovakia (1918–1938)
Rusyns and Ukrainians in Czechoslovakia during the period from 1918 to 1938, were ethnic Rusyns and Ukrainians of the First Czechoslovak Republic, representing the two main ethnic communities in the most eastern region of Czechoslovakia, known during that period as the Subcarpathian Rus. == History == The region of Subcarpathian Rus was the economically poorest region of Czechoslovakia.
Source: Wikipedia — Rusyns and Ukrainians in Czechoslovakia (1918–1938) (CC BY-SA 4.0)