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 Moscow
The city of Moscow gradually grew around the Moscow Kremlin, beginning in the 14th century. It was the capital of the Grand Duchy of Moscow (or Muscovy), from 1340 to 1547 and in 1713 renamed as the Tsardom of Russia by Peter I "the Great" (when the capital was moved to Saint Petersburg). Moscow was the capital of the Russian Soviet Federative Socialist Republic from 1918, which then became the Soviet Union (1922 to 1991), and since 1991 has served as capital of the Russian Federation.