Denmark was a country in Europe and its capital was Copenhagen.
During the 2012 apocalypse, Denmark was hit by massive earthquakes, destroying several of its cities and killing several people living in the country. Later on, Denmark was then swept by a megatsunami in the Worldwide Flooding.
Later on, ash and soot cause famine resulted in many fleeing densely populated rural areas for the big cities(Which was a really bad idea)
After the apocalypse ended, Denmark was left with extreme damage from the apocalyptic disasters, it still habitable anyways so no worries.