Russian Empire
Though the Empire was only officially proclaimed by Tsar Peter I following the Treaty of Nystad (1721), some historians would argue that it was truly born either when Ivan III of Russia conquered Veliky Novgorod in 1478, or when Ivan the Terrible conquered the Khanate of Kazan in 1552. According to another point of view, the term "Tsardom", which was used after the coronation of Ivan IV in 1547, was already a contemporary Russian word for empire.
The Crown of the Russian Empire, or Once Again the Elusive Avengers
The Elusive Avengers, a posse of young Red Partisans, including Valerka, a former schoolboy, Yashka, a devil-may-care gypsy, and two orphan siblings, Danka and his sister Ksanka, become Cheka agents after successfully stealing the map in "The New Adventures of the Elusive Avengers". They wish to abandon their service and study in a university, but the young Soviet Republic needs them again. A group of White emigres, influenced by a scheming French politician, Monsieur Duc, wants to crown a new Tsar in Paris. Two obvious frauds compete for the Russian throne in exile, but they want to be crowned with the real Crown of the Russian emperors!