Sweden Girls

After the success of invading Poland, Charles decided to make an invasion attempt of Russia which ended in a decisive Russian victory at the Battle of Poltava in 1709. After a long march exposed to Cossack raids, Russian Tsar Peter the Great's scorched-earth techniques and the cold Russian climate, the Swedes stood weakened with a shattered morale and enormously outnumbered against the Russian army at Poltava. The defeat meant the beginning of the end for the Swedish Empire.
Charles XII attempted to invade Norway 1716; however, he was shot dead at Fredriksten fortress in 1718. The Swedes were not militarily defeated at Fredriksten, but the whole structure and organization of the Norwegian campaign fell apart with the king's death, and the army withdrew.
Forced to cede large areas of land in the Treaty of Nystad in 1721, Sweden also lost its place as an empire and as the dominant state on the Baltic Sea. With Sweden's lost influence, Russia emerged as an empire and became one of Europe's dominant nations. As the war finally ended in 1721, Sweden had lost an estimated 200,000 men, 150,000 of those from the area of present-day Sweden and 50,000 from the Finnish part of Sweden.
In the 18th century, Sweden did not have enough resources to maintain its territories outside Scandinavia, and most of them were lost, culminating with the 1809 loss of eastern Sweden to Russia which became the highly autonomous Grand Principality of Finland in Imperial Russia.