The monograph contains the results of ten years of research by the author on the problematic issues of regulating the movement of factors and the results of economic activity within the regional integration association, the structure of the Single Internal Market of the European Union, the formation and competition of regional trade regimes. Over the years of studying the topic, the principles of market unity have covered the latest areas of the European economy; The EU faced a number of internal and external challenges that led to a deepening of the integration process; Russia has fundamentally changed, which has expanded the tasks of research.