Faction Nation

Haven - Europe during the Middle Ages
Inferno - cannot be identified!
Necropolis - Haven in a dead version..
Sylvan - Japan (only samurai are missing)
Dungeon - difficult to characterize.. An underground club or organization
Academy - Arabs, Muslims..
Fortress - Highlanders + Norwegians (female heroes are Mongolians)
Stronghold - Mongols (Tatars)