Treaty of Gulistan
In 1800–01, together with the Georgian provinces of Kartli and Kakheti, Lori and Tavush were annexed by the Russian Empire to become part of the Georgia Governorate. Lori became officially part of the Russian Empire at the Treaty of Gulistan signed on 1 January 1813, between Imperial Russia and Qajar Persia, following the Russo-Persian War of 1804–13.