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
Much of Russia's expansion occurred in the 17th century, culminating in the first Russian colonisation of the Pacific in the mid-17th century, the Russo-Polish War (1654–67) that incorporated left-bank Ukraine, and the Russian conquest of Siberia. Poland was divided in the 1790–1815 era, with much of the land and population going to Russia. Most of the 19th century growth came from adding territory in Asia, south of Siberia.