What traditoin did Ivan the terrible introduce that shaped Russian history into the twenith century?

Ivan the Terrible introduced the tradition of autocratic rule in Russia, consolidating power in the hands of the tsar and diminishing the influence of the nobility. This centralization of authority established a precedent for absolute monarchy that would persist for centuries, shaping the governance of Russia. His use of the Oprichnina, a state policy marked by political repression and terror, further instilled a culture of fear and loyalty to the tsar, influencing Russian political dynamics into the 20th century. This legacy of autocracy and centralized power played a crucial role in the evolution of the Russian state and its relationship with the populace.