What geographical information is presented in the image?

The image displays a map with geographical features such as rivers, lakes, and political boundaries. It includes a grid of latitude and longitude lines, with markings for degrees (e.g., 38°, 39°, 40°, 41°, 42°, 43°, 47°, 48°, 49°, 50°). There is also a title in Russian: "Население" (Population) and a legend: "Условные обозначения:" (Legend).