The Church in Armenia in one of the oldest in the world. An important turning point in the history of Armenian Christians was the Council of Chalcedon (451).
Christological conclusions of the council were not accepted by Armenians, which caused an interruption in the communion with Rome and Constantinople. Armenian territory was alzo seized by Muslims, who later split the region between the Persian and Ottoman Empires.
Both these succeeding states, as well as Russia (including as the Soviet Union) and Turkey, persecuted Armenians, whose delibrate suppresion culminated in their genocide in Turkey between 1894 and 1915. Thirteen ancient eparchies of the Armenian Catholic Church ceased to exist during this period.
Nowadays, the jurisdiction of the Armenian Catholic CHurch is partially subordinate to the Patriarch of Cilicia and partially subordinate to the Roman Pontiff.