1448 Christian I is crowned king of Denmark.
1844 Independence of the Duke of Schleswig-Holstein from Denmark.
1863 King Christian IX of Denmark decides to sign the November constitution that declares Schleswig to be part of Denmark. This is seen by the German Confederation as a violation of the London Protocol and leads to the German–Danish war of 1864.
1905 Prince Carl of Denmark becomes King Haakon VII of Norway.
1917 The United States pays Denmark $25 million for the Virgin Islands.
1920 A new border treaty between Germany and Denmark gives northern Schleswig to Denmark.
1940 Denmark leaves the League of Nations.
1946 Soviet troops leave the island of Bornholm, Denmark after an 11 month occupation.
1973 Denmark, the United Kingdom of Great Britain and Northern Ireland, and the Republic of Ireland are admitted into the European Community.
1989 Denmark introduces the world's first legal modern same-sex civil union called "registered partnership".
1993 EU - riots in Nørrebro, Copenhagen caused by the approval of the four Danish exceptions in the Maastricht Treaty referendum. Police opened fire against civilians for the first time since World War II and injured 11 demonstrators. In total 113 bullets are fired.