Carpatho-Ukraine was an autonomous region within Czechoslovakia from late 1938 to March 15, 1939. It declared itself an independent Ukrainian republic on March 15 1939, but was occupied by Hungary between March 15 and March 18, 1939. History » For early history see Carpathian Ruthenia. Soon after the implementation of the Munich Agreement of 29 September 1938 (by which Czechoslovakia lost much of its border region to Nazi Germany) Carpathian Ruthenia and Slovakia declared their autonomy withi… (More on Carpatho-ukraine)