In 1828, the khanates of Erivan and the Nakhchivan were annexed from Persia by the Russian Empire in accordance with the Treaty of Turkmenchay. They were included into a single administrative unit named the Armenian oblast. In 1850 the oblast was reorganized into a governorate, and by 1872 it consisted of 7 uyezds. Louis Joseph Jérôme Napoléon ...