The formation of Armenian revolutionary groups began roughly around the end of the Russo-Turkish War of 1878 and intensified with the first introduction of Article 166 of the Ottoman Penal code 166, and the raid of Erzerum Cathedral.
The Armenian revolutionary groups was formed roughly around the end of the Russo-Turkish War of 1878. The group formation strengthen with the introduction of Article 166 of the Ottoman Penal code 166, and the unexpected attack of Erzerum Cathedral.