The purpose of the research is to provide an analysis of trends and patterns of development of European countries, features of their functioning in the context of restructuring the economies of the CIS countries, to identify internal and external mechanisms of development of European countries and on this basis to formulate a model of economic, legislative and social development. The rule of law is the fulcrum of the European Union. Under EU law, laws are above national interests, including national leaders and politicians. The Republic of Moldova is currently negotiating an Association Agreement, which includes a Comprehensive Free Trade Agreement. Benefits of enlargement: increase in welfare for all EU member states; by 3 times more trade between old and new member states; by 5 times more between new member states; greater stability in Europe; a more important role for the EU on the world stage. It is necessary to overcome the tendency to divide society according to geopolitical criteria: East-West. Rule of law conditions in the region should be strengthened to support the ambitious measures to be taken by interested countries.