Since the unanimous acceptance of the Union of Uzhhorod on the territory that includes present day eastern Slovakia in 1646, the history of the Slovak Greek Catholic Church was intertwined with that of the Ruthenian Greek Catholic Church for a period of several centuries. At the end of World War I, most Greek Catholic Ruthenians and Slovaks were included within the territory of Czechoslovakia, including two eparchies, Prešov and Mukačevo. The eparchy of Prešov, created on September 22, 1818, was removed in 1937 from the jurisdiction of the Hungarian primate and subjected directly to the Holy See, while the 21 parishes of the eparchy of Prešov that were in Hungary were formed into the new exarchate of Miskolc.