Iron Age Scandinavia in the context of "Seiðr"

The Germanic languages are a branch of the Indo-European language family spoken natively by a population of about 515 million people mainly in Europe, Northern America, Oceania, and Southern Africa. The most widely spoken Germanic language, English, is also the world's most widely spoken language with an estimated 2 billion speakers. All Germanic languages are derived from Proto-Germanic, spoken in Iron Age Scandinavia, Iron Age Northern Germany and along the North Sea and Baltic coasts.

The West Germanic languages include the three most widely spoken Germanic languages: English with around 360–400 million native speakers; German, with over 100 million native speakers; and Dutch, with 24 million native speakers. Other West Germanic languages include Afrikaans, an offshoot of Dutch originating from the Afrikaners of South Africa, with over 7.1 million native speakers; Low German, considered a separate collection of unstandardized dialects, with roughly 4.35–7.15 million native speakers and probably 6.7–10 million people who can understand it (at least 2.2 million in Germany (2016) and 2.15 million in the Netherlands (2003)); Yiddish, once used by approximately 13 million Jews in pre-World War II Europe, now with approximately 1.5 million native speakers; Scots, with 1.5 million native speakers; Limburgish varieties with roughly 1.3 million speakers along the Dutch–Belgian–German border; and the Frisian languages with over 500,000 native speakers in the Netherlands and Germany.

The Jastorf culture was an Iron Age material culture in what is now Germany, stretching north into Jutland, and east into Poland, spanning the 6th to 1st centuries BC, forming the southern part of the Pre-Roman Iron Age.

The archaeology of Northern Europe studies the prehistory of Scandinavia and the adjacent North European Plain, roughly corresponding to the territories of modern Sweden, Norway, Denmark, Northern Germany, Poland, the Netherlands and Belgium.

The region entered the Mesolithic around the 7th millennium BC. The transition to the Neolithic is characterized by the Funnelbeaker culture in the 4th millennium BC. The Chalcolithic is marked by the arrival of the Corded Ware culture, possibly the first influence in the region of Indo-European expansion. The Nordic Bronze Age proper began roughly one millennium later, around 1500 BC. The end of the Bronze Age is characterized by cultural contact with the Central European La Tène culture (Celts), contributing to the development of the Iron Age by the 4th century BC, presumably the locus of Common Germanic culture. Northern Europe enters the protohistorical period in the early centuries AD, with the adoption of writing and ethnographic accounts by Roman authors.

The Scandinavian Peninsula became ice-free around the end of the last ice age. The Nordic Stone Age begins at that time, with the Upper Paleolithic Ahrensburg culture, giving way to the Mesolithic hunter-gatherers by the 7th millennium BC (Maglemosian culture c. 7500 – 6000 BC, Kongemose culture c. 6000 – 5200 BC, Ertebølle culture c. 5300 – 3950 BC). The Neolithic stage is marked by the Funnelbeaker culture (4000–2700 BC), followed by the Pitted Ware culture (3200–2300 BC).

Around 2800 BC, metal was introduced in Scandinavia in the Corded Ware culture. In much of Scandinavia, a Battle Axe culture became prominent, known from some 3,000 graves. The period 2500–500 BC also left many visible remains to modern times, most notably the many thousands rock carvings (petroglyphs) in western Sweden at Tanumshede and in Norway at Alta. A more advanced culture came with the Nordic Bronze Age (c. 2000/1750 – 500 BC). It was followed by the Iron Age in the 4th century BC.

The Danevirke or Danework (modern Danish spelling: Dannevirke; in Old Norse: Danavirki, in German: Danewerk, literally meaning earthwork of the Danes) is a system of Danish fortifications in Schleswig-Holstein, Germany. This historically important linear defensive earthwork across the neck of the Cimbrian peninsula was initiated by the Danes in the Nordic Iron Age about AD 650. It was later expanded multiple times during Denmark's Viking Age and High Middle Ages. The Danevirke was last used for military purposes in 1864 during the Second War of Schleswig.

The Danevirke consists of several walls, trenches and the Schlei Barrier. The walls stretch for 30 km, from the former Viking trade centre of Hedeby near Schleswig on the Baltic Sea coast in the east to the extensive marshlands in the west of the peninsula. One of the walls (named Østervolden), between the Schlei and Eckernförde inlets, defended the Schwansen peninsula.