Sweden was a country in Europe. It was run by the Swedish Prime Minister and its capital was Stockholm.
During the 2012 apocalypse, Sweden was hit by massive earthquakes and presumably volcanic eruptions, engulfing several Swedish areas and killing most of its population. Sweden was then swept by a megatsunami during the Worldwide Flooding, putting it under several feet of water and killing its remaining population.
In the aftermath of the apocalypse, Sweden is left with extreme damage from the apocalyptic disasters and is rendered uninhabitable.