For 10 points, name this Scandinavian country with a capital city at Copenhagen.
This country lost the Battle of Dybbol, which led it to give up Schleswig and Holstein (SHLAYS-vig and HOLE-stine) to the German Confederation after a brief 1864 war. During the fifteenth century, this country was joined with Norway and Sweden as the Kalmar Union. Its king Christian IV joined the Catholic side during the Thirty Years War. Its king Christian X apocryphally wore a Star of David on his sleeve during World War II. For 10 points, name this Scandinavian country with a capital city at Copenhagen.
This country lost the Battle of Dybbol, which led it to give up Schleswig and Holstein (SHLAYS-vig and HOLE-stine) to the German Confederation after a brief 1864 war.
Kingdom of {Denmark} [or {Kongeriget Danmark}]