Yazhborovskaya I.S. The prolonged experiment (to the 30th anniversary of the fall of the Berlin Wall). History and Modernity. 2020. No. 1(35). P. 23-44. Yazhborovskaya I.S. The prolonged experiment (to the 30th anniversary of the fall of the Berlin Wall). History and Modernity. 2020. No. 1(35). P. 23-44.ISSN 1811-7481DOI нетРИНЦ: https://www.elibrary.ru/item.asp?id=42955363Posted on site: 14.01.21 AbstractThe world order established after Yalta and Potsdam led to the transformation of the political regimes and socio-economic system of the countries of Central and South-Eastern Europe in accordance with the pre-established laws of socialist construction and on the model of the Soviet model. With the rhythmic downturns of the world economy, the shortcomings of the administrative and command system became more and more apparent and the contradictions in the development of these countries deepened, up to a series of the deepest and most acute political and economic conflicts. Attempts to regulate contradictions by force in the 1950s, during the Prague Spring, as well as in the 1970s and 1980s in accordance with the doctrine of limited sovereignty (the so - called Brezhnev doctrine) eventually led in the late 1980s to the collapse of the socialist camp and the socialist commonwealth itself, to the liquidation of the Council of Mutual Economic Assistance.