1. The Great Northern War (1700-1721) was a conflict waged by the Russian Empire to gain access to the Baltic Sea and to compete with the Swedish王國 for dominance.2. The outcome of the war established Russia as a Baltic power, while Sweden experienced decline and was removed from the list of European great powers.3. The background of the war: During the 16th and 17th centuries, Sweden built a Baltic empire, including Karelia, Estonia, and others. However, Sweden was unable to maintain its military presence in the long-term wars.4. In the late 17th century, Peter the Great ascended to the throne, seeking to重建the Baltic status of Russia. In 1700, the Russian, Danish, and Saxon alliance launched the Northern War.5. The results of the war: After the Swedish army was defeated, a power vacuum emerged. Various countries made peace with Sweden from 1719 to 1720 and divided its North German territories.6. In 1721, Sweden signed the Nystad Treaty with Russia, ceding most of its territories to Russia. Sweden lost its overseas territories from the 17th century and ceased to be a great power.