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.
History of Russia
In February 1613, with the chaos ended and the Poles expelled from Moscow, a national assembly, composed of representatives from fifty cities and even some peasants, elected Michael Romanov, the young son of Patriarch Filaret, to the throne. The Romanov dynasty ruled Russia until 1917.