Transcarpathia is a historical region on the border between Central and Eastern Europe, mostly located in western Ukraine's Zakarpattia Oblast.
From the Hungarian conquest of the Carpathian Basin (at the end of the 9th century) to the end of World War I (Treaty of Trianon in 1920), most of this region was part of the Kingdom of Hungary. In the interwar period, it was part of the First and Second Czechoslovak Republics. Before World War II, the region was annexed by the Kingdom of Hungary once again when Germany dismembered the Second Czechoslovak Republic.