Tiflis Governorate
In 1828 the khanates of Erivan and Nakhchivan were dissolved and their territories united to form the Armenian Oblast ("Armianskaia Oblast"). In 1840 that province was dissolved and its territory incorporated into a larger new province, the Georgia-Imeretia Governorate ("Gruziia-Imeretiia"). This new division did not last long – in 1845 a vast new territory called the Caucasian Territory ("Kavkazskii Krai") or Caucasian Viceregency ("Kavkazskoe Namestnichestvo") was created, in which the former Armenian Province formed part of a subdivision named the Tiflis Governorate. In 1849 the Erivan Governorate was established, separate from the Tiflis Governorate. It included the territory of the former Nakhchivan khanate, which became the province's Nakhchivan uyezd.