The correct statements that describe the Mongol conquest of Russia are:
- Russians who survived Mongol attacks thought their conquerors were invincible.
- Mongol armies leveled cities, looted treasures, and massacred entire populations.
The other statements are incorrect:
- The Mongols did not only attack a few towns and spare most of the inhabitants; their campaigns were generally brutal and destructive, affecting many towns and populations.
- The Mongols who invaded Russia were not called Kazans; Kazan refers to a different historical context related to the Tatar Khanate, which was established later. The Mongol invaders were part of the broader Mongol Empire, specifically the Golden Horde.