to the Aga and Nerchinsk to avoid subjugation by the Daurs.

The Russians reached Lake Baikal in 1643, but the Buryats offered resistance to them and their forces. Although the Buryats were defeated, they attempted to revolt on several further occasions. These revolts were suppressed. The territory and its people were formally annexed to the Russian state by treaties in 1689 and 1727, when the lands on both sides of Lake Baikal