Erivan Khanate in the context of "Kars Province"

The Treaty of Turkmenchay was an agreement between Qajar Iran and the Russian Empire, which concluded the Russo-Persian War (1826–1828). It was second of the series of treaties (the first was the 1813 Treaty of Gulistan and the last, the 1881 Treaty of Akhal) signed between Qajar Iran and Imperial Russia that forced Iran to cede or recognize Russian influence over the territories that formerly were part of Iran.

The treaty was signed on 22 February 1828 (5 Sha'ban 1243) in Torkamanchay (a village between Tabriz and Tehran). It made Iran cede the control of several areas in the South Caucasus to Russia: the Erivan Khanate, the Nakhchivan Khanate and the remainder of the Talysh Khanate. The boundary between Russia and Iran was set at the Aras River. These territories are now Armenia, the south of the Republic of Azerbaijan, Nakhchivan and Iğdır Province (now part of Turkey).

Mohammad Khan Qajar (Persian: محمدخان قاجار) was the khan (governor) of the Erivan Khanate from 1784 to 1805.

The Erivan Governorate was a province (guberniya) of the Caucasus Viceroyalty of the Russian Empire, with its centеr in Erivan (present-day Yerevan). Its area was 27,830 sq. kilometеrs, roughly corresponding to what is now most of central Armenia, the Iğdır Province of Turkey, and the Nakhchivan exclave of Azerbaijan. At the end of the 19th century, it bordered the Tiflis Governorate to the north, the Elizavetpol Governorate to the east, the Kars Oblast to the west, and Persia and the Ottoman Empire to the south. Mount Ararat and the fertile Ararat Valley were included in the center of the province.

In 1828, the khanates of Erivan and the Nakhichevan were annexed from Persia by the Russian Empire through the Treaty of Turkmenchay. The newly annexed territories were incorporated into a single administrative unit known as the Armenian Oblast. In 1849, the oblast was reorganized into a governorate.