"The Treaty of Georgievsk (Russian: Георгиевский трактат, Georgian: გეორგიევსკ ის ტრაქტატი) established the east Georgian kingdom of Kartli-Kakheti as a protectorate under suzerainty of the Russian Empire, and defined the mutual rights and obligations of the two countries toward each other in 1783."

http://en.wikipedia.org/wiki/Treaty_of_Georgievsk

Suzerainty: "...a situation in which a region or people is a tributary to a more powerful entity which allows the tributary some limited domestic autonomy to control its foreign affairs."

http://en.wikipedia.org/wiki/Suzerainty