Yes, not BulgarIA. Also, Amenhotep7, maybe you could add a unit, same graphics, civilopedia entry, etc. of the pikeman, but immobile. Call the unit the great wall garrison or something and place along the wall. Then the wall be defended but you won't see a horde of pikemen running around for no reason. Place the city Bulgar on 57,21. Call the civ Volga Bulgaria.
Also, about military leader names of the Mongols (I already changed them, so I'm not sure about the spelling with the original beta release): It should be Ögödei Khan, Güyük Khan, and Möngke Khan. I'm only mentioning the ones with ö or ü because they can be very confusing. I think Möngke and Güyük were already correct, though. And you are missing two valuable Mongol leaders: Batu and Hülegü. It also might be possible to add a couple of enemy leaders, like Béla IV for Hungary.
Finally piece of constructive criticism: Hsi-Hsia, Chin, and Nan-Song could (and I stress COULD, not SHOULD) be renamed Xixia Empire, Jin Empire, and Southern Song Empire.