Schleswig or
South Jutland ( or
Slesvig; ;
Low German:
Sleswig;
North Frisian:
Slaswik or
Sleesweg) is a region covering the area about 60 km north and 70 km south of the border between
Germany and
Denmark. The region is also known archaically in
English as
Sleswick.
The area's traditional significance lies in the transfer of goods between the
North Sea and the
Baltic Sea, connecting the trade route through
Russia with the trade routes along
Rhine and the
Atlantic coast (see also
Kiel Canal).
History
Roman sources place the homeland of the
Jute tribe north of the river
Eider and that of the
Angles to its south who in turn abutted the neighboring
Saxons. Towards the end of the
Early Middle Ages, Schleswig formed part of the historical
Lands of Denmark as Denmark unified out of a number of petty chiefdoms in the 8th to 10th centuries (The heyday of the Viking incursions).
During the early Viking Age,
Haithabu - Scandinavia's biggest trading centre - was located in this region which is also the location of the
Danewerk. This construction, and in particular its great expansion around 737 has been interpreted as an indication of the emergence of a unified Danish state.
In May 1931 scientists of the
National Museum of Denmark announced the finding of eighteen Viking graves with eighteen men in them. The
discovery came during excavations in Schleswig. The skeletons indicated that the men were bigger proportioned than twentieth century
Danish men. Each of the graves was turned east to west. It was surmised that the bodies were entombed in wooden coffins originally, but only the iron nails remained.
During the 10th century, ownership over the region between the
Eider River and the Danevirke became a matter of dispute between the
Holy Roman Empire and Denmark, resulting in several wars. In 974,
Otto II, Holy Roman Emperor concluded a successful campaign by erecting a fortress, which was however razed by
Sweyn Forkbeard in 983.

Schleswig prior to its partition (also encompassing
Ribe as well as the Baltic islands of
Fehmarn and
Ærø, identified as 9a and 4b, respectively).
High Middle Ages
In 1027,
Conrad II and
Canute the Great settled their mutual border at the Eider. In 1115, king
Niels created his nephew
Canute Lavard - a son of his predecessor
Eric I -
Earl of Schleswig, a title used for only a short time before the recipient began to style himself
Duke. In 1230s, Southern Jutland (Duchy of Slesvig) was allotted as an appanage to
Abel Valdemarsen, Canute's great-grandson, a younger son of
Valdemar II of Denmark. Abel, having wrested the Danish throne to himself for a brief period, left his duchy to his sons and their successors, who pressed claims to the throne of Denmark for much of the next century, so that the Danish kings were at odds with their cousins, the dukes of Slesvig.
Early modern times
Feuds and marital alliances brought the Abel dynasty into a close connection with the German
Duchy of Holstein by the 15th century. The latter was a
fief subordinate to the
Holy Roman Empire, while Schleswig remained a Danish fief. These dual loyalties were to become a main root of the dispute the between German states and Denmark in the 19th century, when the ideas of
romantic nationalism and the
nation-state won popular support. The title
Duke of Schleswig was inherited in 1460 by the hereditary
kings of Norway who also regularly were elected kings of Denmark simultaneously, and their sons (contrary to Denmark which was not hereditary). (This was an anomaly – a king holding a ducal title, which he as king was the fount of and its liege lord – the title and anomaly survived presumably because it was already co-regally held by the king's sons.)
19th century
Conflict between Denmark and German states over Schleswig and
Holstein led to the
Schleswig-Holstein Question of the 19th century. Denmark attempted to integrate the Duchy of Schleswig into the Danish kingdom in 1848, leading to an uprising of ethnic Germans who supported Schleswig's ties with Holstein. The
Kingdom of Prussia, led by
Otto von Bismarck, intervened and defeated Denmark in the resulting
First War of Schleswig, but was forced to return Schleswig and Holstein under pressure from the
Austrian and
Russian Empires.
Denmark again attempted to integrate Schleswig in 1864, but the
German Confederation defeated the Danes in the
Second War of Schleswig. Prussia and Austria respectively assumed administration of Schleswig and Holstein under the
Gastein Convention of 14 August 1865. However, tensions between the two powers culminated in the
Austro-Prussian War of 1866, in which victorious Prussia annexed Schleswig and Holstein, creating the
province of Schleswig-Holstein.
Modern times
Two
referendums held in 1920 resulted in the partition of the region.
Northern Schleswig joined Denmark, whereas Central Schleswig voted to remain a part of Germany. In Southern Schleswig no referendum was held as the likely outcome was apparent. The name
Southern Schleswig is now used for all of German Schleswig.
Today, both parts cooperate as a
Euroregion, despite the national frontier dividing the former duchy.
Dukes and rulers

Danish Map of South Jutland (1918)
Former naming dispute
In the 19th century, there was a naming dispute concerning the use of
Schleswig or
Slesvig and
Sønderjylland (
South Jutland).
Germans strongly objected to the Danish use of "Sønderjylland". "Olsen's Map", published by the Danish cartographer Olsen in the 1830s and using that term, aroused a storm of protests by German inhabitants. The name "Schleswig", which had a long previous history with no special political connotations, assumed a clear German nationalist character in the 19th century – especially when included in the combined term "Schleswig-Holstein". A central element of the German nationalistic claim was the insistence upon Schleswig and Holstein being a single, indivisible entity. Since Holstein was legally part of the German Confederation and ethnically entirely German with no Danish population, use of that name implied that both provinces should belong to Germany and their connection with Denmark weakened or altogether severed.
For their part, Danes had no objection to the use of "Schleswig" as such, and in fact the name had a commonly-used Danish version "Slesvig". "Sønderjylland" was an older term, hardly used between the 16th and 19th centuries. However, its revival and widespread use in the 19th Century had a clear Danish nationalist connotation of laying a claim to the territory and objecting to the German claims.
The naming dispute was resolved with the 1920 plebiscites and partition, each side applying its preferred name to the part of the territory remaining in its possession – though both terms can in principle still refer to the entire region. Northern Schleswig was after the 1920 plebiscites officially named South Jutlandic districts (
de sønderjyske landsdele), while Southern Schleswig became a part of German
Schleswig-Holstein.
See also