TY JOUR TI Theoretical and methodological foundations of the study of the phenomenon of chiefdom: terminological and conceptual apparatus (Part 1) KW term KW concept KW terminology KW object of research JO Society, law, statehood: retrospective and perspective AU Kashapov, U.A. AU Suleymanov, T.F. PY 2025 IS 2025 PB Ufa Law Institute of the Ministry of Internal Affairs of Russia