History
Denmark's recorded history begins with the Vikings, who from the eighth to the eleventh centuries raided, traded, and settled across the North Atlantic and into England, where Danish kings ruled for a time. The monarchy that emerged is one of the oldest in the world, traced by tradition to Gorm the Old in the tenth century; his son Harald "Bluetooth" is credited on a runestone at Jelling with uniting Denmark and bringing it to Christianity.
In 1397 the Kalmar Union joined Denmark, Norway, and Sweden under the Danish crown. Denmark then spent centuries as a regional power, losing Sweden, then Norway (in 1814, after backing Napoleon), and finally the duchies of Schleswig and Holstein to Prussia and Austria in 1864 — a defeat that shrank the country to roughly its present size and turned it inward.
Denmark stayed neutral in the First World War and was occupied by Nazi Germany in the Second, when a widely admired civil effort ferried most of the country's Jews to safety in Sweden. Post-war Denmark built one of the world's most comprehensive welfare states, joined NATO in 1949 and the European Community in 1973, while opting out of the euro and some other EU projects. Greenland and the Faroe Islands remain self-governing parts of the Danish realm. Since 2025 the United States has sought to acquire Greenland, a dispute known as the Greenland crisis; the Danish and Greenlandic governments have refused any American takeover, and in 2026 President Trump pledged not to use force or tariffs to annex the island. In September 2026 the three governments reached an agreement expanding the American military presence there, which the Danish and Greenlandic governments say transfers no sovereignty.
- Denmark: From Viking Raiders to the Welfare State — One of the oldest kingdoms in Europe — Viking fleets, a North Sea and Baltic empire, three centuries of shrinking, and a small country's reinvention
