Historical geography of Slovakia

Carpatho-Ukraine or Carpathian Ukraine (, ) was an autonomous region within the Second Czechoslovak Republic and short-lived state. It was created in December 1938 and renamed from Subcarpathian Rus', whose full administrative and political autonomy had been confirmed by constitutional law of 22 November 1938.

Tajchy (singular: tajch, from German Teich) are artificial water reservoirs in the Štiavnica Mountains, in central Slovakia. Most of them were built in order to provide energy for the silver mines of Banská Štiavnica in the 18th century. At their height, tajchy comprised a sophisticated system of 60 reservoirs, connected to each other by more than 100 km of channels and tunnels. thumb|right|250px|Počúvadlo Lake is one of the preserved tajchy

part of Slovakia

region of Hungary from 1939 to 1945