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.
First Russian circumnavigation
The first Russian circumnavigation of the Earth took place from August 1803 to August 1806. It was sponsored by Count Nikolay Rumyantsev, funded by the Russian-American Company, and was headed by Adam Johann von Krusenstern. In addition to its exploratory goals, the expedition was also meant to help establish diplomatic and economic relations between Russia and Japan, for which the party included a large diplomatic delegation headed by Court Chamberlain and Ambassador Nikolai Rezanov.