Denmark

State · 1945–2026 CE · at its largest around 1946 CE

Postwar Denmark built one of the world's most generous welfare states and won fame for its design, from Arne Jacobsen's chairs to Lego bricks. It pioneered wind power, embraced cycling cities and consistently ranks among the happiest countries on earth.

On its lands while it lasted

• Niels Bohr (1885 CE – 1962 CE): Danish physicist who proposed a quantum model of the atom in 1913 and won the 1922 Nobel Prize in Physics. His Copenhagen institute became a centre for the development of quantum mechanics.
• Dolly the sheep (1996 CE): Born at the Roslin Institute near Edinburgh in 1996, Dolly was the first mammal cloned from an adult somatic cell.
• Creation of Nunavut (1999 CE): Nunavut was separated from the Northwest Territories as a territory with an Inuit majority, the result of a land claims agreement.

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