INTERNATIONAL COOPERATION IN THE FIELD OF CIVIL AND FAMILY LEGAL RELATIONS (THE DEVELOPMENT OF THE CONSTITUTIONAL FOUNDATIONS) Grigoryeva Olga G., PhD at Law. <...> Department: legal foundation for administration Place of employment: Moscow State Institute of International Relations Ministry of Foreign Affairs of the Russian Federation 5618861@mail.ru Abstract: Annotation. <...> The article refers to the regulations of the soviet constitutions and the constitutions of the Union Republics that define principles and guidelines for international cooperation with foreign countries. <...> The author analyzes the texts of the USSR Constitution of 1924, the USSR Constitution of 1936, the USSR Constitution of 1977. <...> The fundamentals of foreign policy and international cooperation also reflected the constitutions of the Union Republics. <...> Therefore, in the article the provisions of the Constitution of the Russian Soviet Socialist Republic of 1918, 1924, 1937 and 1978 were studied, as well as the constitutions of the individual soviet republics (of Ukraine, Belarus, Kazakhstan and others). <...> Methodological basis of research is the dialectical method. <...> Used: historical method, the sociocultural approach, formal-legal method the contribution of authors to the topics: setting a new for the Russian science problems -the protection of civil and family rights of citizens through cooperation of Russia with foreign countries;it shows the development of the constitutional bases for such cooperation; the revealed traditions of cooperation and continuity. <...> Keywords: international cooperation; foreign policy; The Union of Soviet Socialist Republics (USSR); Union Republic; Constitution. <...> Traditionally the basis for international cooperation of the Soviet Union in different fields (economic, cultural, legal, etc.) was the provisions of its constitution – about grounds of foreign policy and determination of the competent authority in the sphere of external relations with foreign states. <...> July 10, 1918 the Constitution (Fundamental Law) of the Russian Soviet Federative Socialist Republic (RSFSR) was adopted at the V All-Russian Congress of Soviets. <...> The RSFSR Constitution of 1918 declared Russia as «Republic of Soviets of Workers', Soldiers' and Peasants' Deputies. <...> All power, centrally and locally, is vested in these Soviets. <...> The Russian Soviet Republic is established on the basis of a free union of free nations, as a federation of Soviet national republics». <...> The main provisions of the RSFSR Constitution of 1918 104 that clearly characterize the political, economic, spiritual and moral condition of the young post-revolutionary state and reflect the tasks of the state during transition period <...>