Treaty of Nystad
The Treaty of Nystad (1721) ended the Great Northern War, in which Russia received the territories of Estonia, Livonia, Karelia and Ingria and Tsar Peter I of Russia replaced King Frederick I of Sweden, as ruler of the conquered provinces. It marked the advent of Russia as a world power in place of Sweden. The conflict with the other parties, Hannover, Kingdom of Prussia and Denmark had been concluded by the Stockholm treaties in 1719 and 1720.
See also: Nystad