AUTHOR: Olena BACYNSKA Danubius, XXXIV-Supliment, Galaţi, 2016, pp. 13-20. Abstract This publication offers a vision of the author on the causes of subsidence of the Zaporozhian Cossacks (Potkalı Kazakları) in the Ottoman Empire (Budjak and Dobruja) and how their status changed at the end XVIII century. Attempts to start thier own organization – Sich Zadunays’ka,…