Kazakhstan
According to the 2009 Census data, there are very few Christians outside the Slavic and Germanic ethnic groups:
Kipchak language
Kazakhs are remnants of Eastern Cuman-Kipchak tribes who lived in Northern Kazakhstan in the 10th century, but migrated to Europe later. So, their language originates from a more isolated form of earlier Kipchak.
Tatars, Siberian Tatars, Balkars, Karachays, Kumyks, Cumans (later Crimean Tatars), Bashkirs and Mongolian aristocracy adopted the Kipchak language in the days of the Golden Horde.