Geography, population profiles
The present Hungarian-Romanian and Hungarian-Ukrainian state borders are originated from the Trianon Peace Treaty having been signed at the end of World War I. The Hungarian-Romanian section is 448 and the Hungarian-Ukrainian section is 137 km long. This is a special area as the presence of Hungarian ethnic minorities on the Ukrainian and Romanian side is significant. Four counties cover each side of the Hungarian-Romanian frontier zone. Satu Mare, Bihor, Arad and Timis are the Romanian counties (with a total area of 28,845 sq. kilometers and a total population of 2.17 million) while Szabolcs-Szatmár-Bereg, Hajdú-Bihar, Békés and Csongrád (22,045 sq. kilometers, 1.94 million population) are the Hungarian ones. Transcarpathia (12,800 sq. kilometers with a total population of 1.28 million) is filling up the Ukrainian frontier zone.