Poznans'ka K. Liquidation by Bolsheviks of social-revolutionaries and social-democrats party-political opposition in Ukraine in the end of 1919-1924.

The object - the all-Russian socialist parties of social-revolutionaries and social-democrats in Ukraine in the circumstances of formation one party Bolsheviks power system. The aim of dissertation search was pointed by science importance and the necessity to find out as objective, so as subjective reasons, and also the methods of liquidation of social-democrat's and social-revolutionaries' organizations by Bolsheviks in Ukraine, to show the liquidation process of Mensheviks' and Esers' oppositional parties. Historical method: problematical-chronological, comparative-historical, history-genetically, synchronically, diachronically, retrospective. System-structural and statistical all science method of learning are also used. The dissertation is a complex research of liquidation's process of the all-Russian socialist parties of social-revolutionaries and social-democrats in Ukraine in the end of 1919 - 1924. On the basis of wide source study base, and achievements of the modern Ukrainian and world historical science the reasons and features of application by Bolsheviks Soviet authority and repressive power bodies actions in relation to the organizations of social-revolutionaries and social-democrats in Ukraine are established.