What are the differences between Cossacks/Tatars? Where do they come from and how are they related to Turks and/or Mongols?

by elencus
elencus

Followup questions:

  1. How are the Turks and Mongols related?

  2. How are other European peoples (i.e. Hungarians and Bulgarians) related to the Turks and/or Mongols, if at all?