Wikipedia
Carpatho-Ukraine
Carpatho-Ukraine (, ) was an autonomous region within Czechoslovakia from late 1938 to March 15, 1939. It declared itself an independent republic on March 15, 1939, but was annexed by Hungary between March 15 and March 16, 1939, remaining under Hungarian control until the end of World War II, when it was ceded to the Soviet Union. The territory is now administered as Zakarpattia Oblast in Ukraine.