By 1560 all the Finnic and Tatar tribes between the Oka and the Kama had become Russian subjects.
Those of the later Lacustrine period, on the contrary, are so numerous that there is scarcely one lacustrine basin in the regions of the Oka, the Kama, the Dnieper, not to speak of the lake-region itself, and even the White Sea coasts, where remains of Neolithic man have not been discovered.
It is the chief entrepot for grain from the basin of the lower Oka, and carries on an active trade with Moscow and Nizhniy-Novgorod.
Till about midday he followed the course of the action with his usual alertness; then he appears to have been overcome by a / Merezhk Grodno Niel Minsk Pultusk Modlin Memel Dunaburg Vilkomir Vilna Oka Ostrolenka Scale.
This conformation is seen in the valley of the Us in West Sayan, in that of the upper Oka and Irkut in East Sayan, in the valley of the Barguzin, the upper Tsipa, the Muya and the Chara, at the foot of the Vitim plateau, as also, probably, in the Aldan.