For 10 points, name this Scandanavian country which was led by Gustavus Adolphus and has its capital at Stockholm.
One king from this country employed the statesman Axel Oxenstierna (OCKS-en-STEER-nuh). This country's king Charles XII won the battle of Narva but was crushed by Russia in the battle of Poltava during the Great Northern War. This country broke away from the Denmark-controlled Kalmar Union under its king Gustav Vasa. Another king of this country was nicknamed the Lion of the North before dying at Lutzen during the Thirty Years War. For 10 points, name this Scandanavian country which was led by Gustavus Adolphus and has its capital at Stockholm.
One king from this country employed the statesman Axel Oxenstierna (OCKS-en-STEER-nuh).
Sweden