History of Russia
The war ended in 1721 when an exhausted Sweden sued for peace with Russia. Peter acquired four provinces situated south and east of the Gulf of Finland, thus securing his coveted access to the sea. There, in 1703, he had already founded the city that was to become Russia's new capital, Saint Petersburg, as a "window opened upon Europe" to replace Moscow, long Russia's cultural center. Russian intervention in the Commonwealth marked, with the Silent Sejm, the beginning of a 200-year domination of that region by the Russian Empire. In celebration of his conquests, Peter assumed the title of emperor, and the Russian Tsardom officially became the Russian Empire in 1721.
History of Russia
Thus, the first East Slavic state, Rus', emerged in the 9th century along the Dnieper River valley. A coordinated group of princely states with a common interest in maintaining trade along the river routes, Kievan Rus' controlled the trade route for furs, wax, and slaves between Scandinavia and the Byzantine Empire along the Volkhov and Dnieper Rivers.