What makes Northern Europe a region

An assembly first, a treaty afterwards

The Nordic Council came before the document that governs it. The parliaments of Denmark, Iceland, Norway and Sweden agreed to it in 1952, and it held its first session in Copenhagen on 13 February 1953. Finland joined in 1955. The Faroe Islands and Åland were given seats of their own inside the Danish and Finnish delegations in 1970, and Greenland inside Denmark's in 1984, which is how three countries with no seat at the United Nations sit in the assembly that defines the group.

The treaty followed ten years after the assembly. The Treaty of Co-operation between Denmark, Finland, Iceland, Norway and Sweden was signed at Helsinki on 23 March 1962 and entered into force on 1 July 1962. It binds the five states to consult each other, to align law where alignment is possible, and to treat each other's citizens as their own across a named list of fields. It creates no legislature: the Council recommends and the parliaments dispose. An amending agreement of 13 February 1971 added the Nordic Council of Ministers, which is the governments meeting rather than the parliaments, and further amendments run to 1995.

Free movement, decades before Schengen

A protocol signed at Stockholm on 14 July 1952 dropped the passport requirement between Denmark, Finland, Norway and Sweden. A second, signed at Copenhagen on 22 May 1954 and in force from 1 July that year, opened the labour market, so that a citizen of one country could live and work in another without a permit. The convention that removed the checks at the internal borders was signed on 12 July 1957 and took effect on 1 May 1958. Iceland acceded on 24 September 1965, and the arrangement reached Iceland and the Faroe Islands on 1 January 1966.

That arrangement then had to survive a larger one. Norway and Iceland are outside the European Union and were brought into Schengen as associated states, and the acquis began to apply across the Nordic area on 25 March 2001, the Faroe Islands excepted. Passport-free travel inside the group was older than the rule that replaced it, and much of the negotiation was about keeping it.

The Union's boundary runs through the group

Denmark acceded to the European Communities on 1 January 1973 and the Faroe Islands stayed outside. Greenland went in with Denmark, voted against continued membership on 23 February 1982 by 53.02%, and left under the treaty signed at Brussels on 13 March 1984, which took effect on 1 February 1985. It has been an Overseas Country and Territory since. Finland and Sweden acceded on 1 January 1995. Norway negotiated terms twice and put them to a vote twice, on 25 September 1972 and on 28 November 1994, and the no side won both, the second by 52.18%. Norway and Iceland take the internal market through the European Economic Area instead, in force from 1 January 1994. Åland is inside the Union and outside its value added tax and excise territory, under a protocol to Finland's accession treaty.

The security map closed later and faster. Denmark, Iceland and Norway signed the North Atlantic Treaty on 4 April 1949. Finland and Sweden applied on 18 May 2022, Finland acceded on 4 April 2023, and Sweden on 7 March 2024.

The cross, and the one flag that declined it

Every flag filed here but one carries the off-centre cross of the Danish Dannebrog, and the record holds the date each was adopted: Norway on 13 July 1821, Sweden on 22 June 1906, Finland on 29 May 1918, the Faroese Merkið recognised on 25 April 1940, Iceland's in 1944 and Åland's in 1954. Greenland is the exception, and by decision rather than by drift. On 21 June 1985 its assembly adopted Erfalasorput, a white and red disc, over a green and white Nordic cross, by 14 votes to 11.

The names on the money are older than most of the flags. Denmark and Sweden agreed a monetary union on 5 May 1873 on a gold krone and Norway joined it in 1875. The arrangement came apart during the First World War and was formally wound up in 1924. The name stayed where the union did not.

Languages that do not follow the borders

Danish, Norwegian, Swedish, Icelandic and Faroese are North Germanic, and the mainland three are largely readable across the borders. Finnish is Uralic. Greenlandic, Kalaallisut, is an Inuit language. Sámi languages are spoken across the north of Norway, Sweden and Finland, over a range that ignores all three frontiers. Nothing in that list makes a family, which is part of why the arrangement is written down: the Nordic Language Convention, in force from 1 March 1987, gives a citizen of one signatory the right to use their own Nordic language in another's courts, hospitals and public offices. Åland is Swedish-speaking under the guarantee the League of Nations attached to Finnish sovereignty in June 1921, while Finland around it is bilingual.

Ground that has not finished moving

The northern part of the group sits on the Fennoscandian Shield, and the ice sheet that pressed it down is gone while the crust is still coming back. At the High Coast on the Gulf of Bothnia the land rises about 8 millimetres a year and has risen about 285 metres since the ice retreated, which is why UNESCO inscribed the site in 2000 and extended it across the water to Finland's Kvarken Archipelago in 2006. Shorelines there are dated by their height above the water, and islands join up within a lifetime.

The relief in the records runs a long way. Greenland's Gunnbjørn Fjeld reaches 3,694 metres above an ice sheet that covers most of what lies beneath it. Iceland's Hvannadalshnúkur reaches 2,110 metres on the rim of a volcano under the Vatnajökull ice cap. Åland's Orrdalsklint reaches 127 metres, and Denmark's Møllehøj 171.

Where the edges are argued

The M49 standard published by the UN Statistics Division draws Northern Europe far wider than this page does. It files the United Kingdom, Ireland, Estonia, Latvia, Lithuania, Guernsey, Jersey, the Isle of Man, and Svalbard and Jan Mayen in the same subregion, and it puts Greenland under Northern America. The standard says of its own groupings that they are a statistical convenience carrying no political meaning. This catalogue takes the Nordic reading of the north instead, and files the British Isles and the Baltic states in regions of their own. Both readings are in print and neither is settled here.

Two further distinctions are worth keeping apart. Scandinavia in its narrow sense means Denmark, Norway and Sweden, and in its narrowest the peninsula that Norway and Sweden share, while Nordic is the wider word and the one the institutions use. And Greenland sits on the North American plate: the agreement signed at Ottawa on 14 June 2022 divided Tartupaluk, or Hans Island, between Canada and the Kingdom of Denmark and gave Greenland a land border with Canada, while its delegation sits in the Nordic Council and its foreign affairs run through Copenhagen. The catalogue records where a place is and where it is administered from, and here the two answers point in different directions.