How to install APK / APKS / OBB file on Android
Learn names, locations on the map, capitals and coats of arms of all federal subjects (regions) of Russia (there are 85 subjects according to the Russian Constitution: 46 oblasts, 22 republics, 9 krais, 4 autonomous okrugs, 3 federal cities, and 1 autonomous oblast).
From Kaliningrad to Vladivostok, from Chechnya to Siberia:
Become an expert in Russian geography!