At its confluence with the Oka the Volga enters the broad lacustrine depression which must have communicated with the Caspian during the post-Pliocene period by means of at least a broad strait.
It occupies an advantageous position on the great artery of Russian trade, at a place where the manufactured and agricultural products of the basin of the Oka meet the metal wares from that of the Kama, the corn and salt brought from the south-eastern governments, the produce of the Caspian fisheries, and the various wares imported from Siberia, Central Asia, Caucasia and Persia.
To the upper Oka in the N.E., is the most important.
They are described under different names in Siberia - the Altai Mountains in West Siberia, the Kuznetskiy Ala-tau and the Us and Oya Mountains in West Sayan, the Nizhne-Udinsk taiga or gold-mine district, several chains pierced by the Oka river, the Kitoi Alps in East Sayan, the mountains of the upper Lena and Kirenga, the Olekminsk gold-mine district, and the unnamed mountains which project north-east between the Lena and the Aldan.
Nabhaji had himself met Tulsi Das; but the stanza in praise of the poet gives no facts relating to his life.; these are stated in the Oka or gloss of Priya Das, who wrote in A.D.
Above the banks of the Oka and the Volga, and in the centre of a very lively traffic. Piles of salt line the salt wharves on the Oka; farther down are the extensive storehouses and heaps of grain of the corn wharves; then comes the steamboat quay on the Volga, opposite the Kremlin, and still farther east the timber wharves.
Above sea-level) above the right bank of both the Oka and the Volga.
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.
By 1560 all the Finnic and Tatar tribes between the Oka and the Kama had become Russian subjects.
The drainage area of the Oka is a territory of 97,000 sq.