Russian Expansion in Siberia in the 1620s

Timeline

1. 1621–1624Tomsk and the upper Ob River · Ob RiverIn the early 1620s, Russia used Tomsk (founded 1604) as a hub to extend fur collection and taxation systems into the upper Ob and Yenisei; Cossack expeditions funded by the Stroganov family penetrated the Tungus region, establishing winter camps and compelling local tribes to pay fur tribute (yasak).
2. 1624–1627Yeniseysk and Kuznetsk · Yenisei RiverIn the mid-1620s, Russia consolidated Yeniseysk (founded 1619) as the Siberian administrative center and established metallurgical and trading posts at Kuznetsk (founded 1618); Cossacks continued eastward along the Yenisei, clashing with Tungus and Buryat tribes and establishing protectorate relations.
3. 1628–1630Krasnoyarsk · SiberiaIn 1628, Cossacks established the Krasnoyarsk (Krasny Yar) fortress on the right bank of the Yenisei, a strategic node controlling the middle Yenisei; meanwhile the Mangazeya Arctic trade route maintained long-distance trade with Moscow, and by the late 1620s the Siberian administrative system already extended east of the Yenisei.