This series of battles ended the Swedish Empire, and prefigured Russia’s dominant position in Baltic Sea and its rise as a major player in European politics. The war began in 1700 as a coordinated attack on Sweden by a coalition of Russia, Denmark-Norway, and Saxony (also the Polish-Lithuanian Commonwealth from 1701 to 1706 and from 1709, and Prussia and Hanover from 1715), and ended in 1721 with the Treaty of Nystad and the Stockholm treaties.
Editors. "The Great Northern War". The Literary Encyclopedia. First published 01 February 2010; last revised 30 November -1.
[http://www.litencyc.com/php/stopics.php?rec=true&UID=4172, accessed 20 April 2015.]