For 10 points, name this Scandinavian country with a capital city at Stockholm.
The Caps and the Hats were two political factions during this country's Age of Liberty, which saw a privy council lead by Arvid Horn control the monarchy. That time period followed a war in which this country won battles at Gadebusch and Narva, but lost at Poltava. By the Treaty of Kiel, Denmark give this country control of its western neighbor. This country's House of Vasa included such rulers as Queen Christina and another nicknamed the "Lion of the North," Gustavus Adolphus. For 10 points, name this Scandinavian country with a capital city at Stockholm.
The Caps and the Hats were two political factions during this country's Age of Liberty, which saw a privy council lead by Arvid Horn control the monarchy.
Kingdom of {Sweden} [or Konungariket {Sverige}]