The complexity of the economic system ensures its resistance to many external and internal influences. In this context, multivariability is considered as a necessary condition for the existence of any national economy at any stage of its life cycle. This monograph is devoted to the generation, functioning and interaction of various socio-economic structures, as well as to the analysis of their role in socio-historical development. The book will be useful to graduate students and doctoral students of economic specialties, teachers of economic disciplines in universities.