The book is devoted to the political history of Hungary from the end of World War II until the establishment of multi-party parliamentary democracy in the early 90s. XX century The processes of formation and change of the political system, key problems of the 40-50s, features of short-term popular democratic development and the approval of the dictatorial regime are analyzed. The most important aspects of the popular uprising of 1956 and the post-revolutionary socialist experiment are covered, the time of the reign of J. Kadar is characterized and Soviet-Hungarian relations of that era are described.