Identify the geographical objects marked with numbers on the map.

Given the map and the numbering, here are some possible identifications of the geographical objects: * 1 - Volga River * 2 - Caspian Sea * 3 - Caucasus Mountains * 4 - Don River * 5 - City of Moscow (most likely, due to its central location and proximity to other features) * 6 - Dnieper River * 7 - Oka River * 8 - Kama River * 9 - Ural Mountains * 11 - Eastern European Plain * 13 - Carpathians Mountains * 14 - Scandinavian Mountains