Ivan IV Vasilievich, also known as Ivan the Terrible, reigned as the Grand Prince of Moscow from 1533 to 1547 and as the first Tsar of Russia from 1547 to 1584. During his reign, he expanded the Russian territory, conquered the Kazan and Astrakhan Khanates, and established Russian dominance over the Volga region. Ivan IV also implemented several reforms, such as the establishment of the oprichnina, a special administrative and military force, and the introduction of new laws and regulations. However, his rule was marked by violence and terror, earning him the nickname "the Terrible." He is remembered as a complex and controversial figure in Russian history, whose actions shaped the development of the Russian state.
