Jutland Peninsula in the context of "Hamburg"

South Jutland County (Danish: Sønderjyllands Amt) is a former county (Danish: amt) on the south-central portion of the Jutland Peninsula in southern Denmark.

The county was formed on 1 April 1970, comprising the former counties of Aabenraa (E), Haderslev (N), Sønderborg (SE), and Tønder (SW). The county was abolished effective 1 January 2007, when the Region of Southern Denmark was formed.

Southern Schleswig (German: Südschleswig or Landesteil Schleswig, Danish: Sydslesvig; North Frisian: Söödslaswik) is the southern half of the former Duchy of Schleswig in Germany on the Jutland Peninsula. The geographical area today covers the large area between the Eider river in the south and the Flensburg Fjord in the north, where it borders Denmark. Northern Schleswig, congruent with the former South Jutland County, forms the southernmost part of Denmark. The area belonged to the Crown of Denmark until Prussia and Austria declared war on Denmark in 1864. Denmark wanted to give away the German-speaking Holsten and set the new border at the small river Ejderen. Prussian chancellor Otto von Bismarck concluded that this justified a war, and even proclaimed it a "holy war". He also turned to the Emperor of Austria, Franz Joseph I of Austria for help. A similar war in 1848 had gone poorly for the Prussians. With Prussia's modern weapons and the help from both the Austrians and General Moltke, the Danish army was destroyed and forced to make a disorderly retreat. The Prussian-Danish border was then moved from the Elbe up in Jutland to the Kongeåen creek.

After the First World War, two referendums decided a new border.The northern part reverted to Denmark as Nordslesvig (North Slesvig). But the middle and southern part, including Schleswig's only city, Flensburg, remained in Germany. In Denmark, the loss of Flensborg sparked a political crisis, Påskekrisen or the Easter Crisis of 1920. After the Second World War the area remained as German territory and, with Holstein, formed the new state of Schleswig-Holstein as a part of the Federal Republic of Germany (West Germany) in 1948.

The Øresund Bridge or Öresund Bridge is a combined railway and motorway cable-stayed bridge across the Øresund strait between Denmark and Sweden. It is the second longest bridge in Europe and combines both roadway and railway in a single structure, consisting of international European route E20 and the Øresund Line respectively. It runs nearly 8 kilometres (5 miles) from the Swedish coast to the artificial island of Peberholm in the middle of the strait. The Øresund Link is completed by the 4-kilometre (2.5 mi) Øresund Tunnel from Peberholm to the Danish island of Amager.

Construction began in 1995 and it opened to traffic on 1 July 2000. The bridge, as part of the Øresund Link, directly connects the road and rail networks of the Scandinavian Peninsula with Mainland Europe, via the Great Belt Fixed Link (constructed 1988–1998) connecting Zealand to Funen and thence to the Jutland Peninsula. Both projects helped to lessen the isolation of Sweden and the rest of Scandinavia from the rest of the continent. A data cable also makes the Øresund Link the backbone of Internet data transmission between central Europe and Sweden.

The Jutes (/dʒuːts/ JOOTS) were one of the Germanic tribes who settled in Great Britain after the departure of the Romans. According to Bede, they were one of the three most powerful Germanic nations, along with the Angles and the Saxons:

There is no consensus amongst historians on the origins of the Jutes. One hypothesis is that they originated from the Jutland Peninsula but after a Danish invasion of that area, migrated to the Frisian coast. From the Frisian coast they went on to settle southern Britain in the later fifth century during the Migration Period, as part of a larger wave of Germanic migration into Britain.They were possibly or probably related to the North Germanic tribe Geats.

The Little Belt (Danish: Lillebælt, pronounced [ˈliləˌpelˀt]) is a strait between the island of Funen and the Jutland Peninsula in Denmark. It is one of the three Danish Straits that drain and connect the Baltic Sea to the Kattegat strait, which drains west to the North Sea and Atlantic Ocean.

Hedeby (Danish pronunciation: [ˈhe̝ːðəˌpyˀ], Old Norse: Heiðabýr, German: Haithabu) was an important Danish Viking Age (8th to the 11th centuries) trading settlement near the southern end of the Jutland Peninsula, now in the Schleswig-Flensburg district of Schleswig-Holstein, Germany. Around 965, chronicler Ibrahim ibn Yaqub visited Hedeby and described it as "a very large city at the very end of the world's ocean."

Due to its unique position between the Frankish Empire and the Danish Kingdom, the settlement developed as a trading centre at the head of a narrow, navigable inlet known as the Schlei, which connects to the Baltic Sea. The location was favorable because there is a short portage of less than 15 km to the Treene River, which flows into the Eider with its North Sea estuary, making it a convenient place where goods and ships could be pulled on a corduroy road overland for an almost uninterrupted seaway between the Baltic and the North Sea and avoid a dangerous and time-consuming circumnavigation of Jutland, providing Hedeby with a role similar to later Lübeck. Hedeby was the second largest Nordic town during the Viking Age, after Uppåkra in present-day southern Sweden. The city of Schleswig was later founded on the other side of the Schlei. Hedeby was abandoned after its destruction in 1066.