Corded Ware culture in the context of "Archaeological horizon"

The Nordic Bronze Age (also Northern Bronze Age, or Scandinavian Bronze Age) is a period of Scandinavian prehistory from c. 2000/1750–500 BC.

The Nordic Bronze Age culture emerged in the period 2000-1750 BC as a continuation of the Late Neolithic Dagger period, which is rooted in the Battle Axe culture (the Swedish-Norwegian Corded Ware variant), the Single Grave Culture (the north German and Danish Corded Ware variant) and Bell Beaker culture, as well as from influence that came from Central Europe. This influence most likely came from people similar to those of the Únětice culture, since they brought customs that were derived from Únětice or from local interpretations of the Únětice culture located in North Western Germany. The metallurgical influences from Central Europe are especially noticeable. The Bronze Age in Scandinavia can be said to begin shortly after 2000 BC with the introduction and use of bronze tools, followed by a more systematic adoption of bronze metalworking technology from 1750 BC.

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 Indo-Iranian peoples, or Indo-Iranic peoples, also known as Ā́rya or Aryans from their self-designation, were a group of speakers of Indo-European languages who brought the offshoot Indo-Iranian languages to parts of Eurasia in waves from the first part of the 2nd millennium BC onwards. They eventually branched out into the Iranian peoples and Indo-Aryan peoples.

In archaeogenetics, the term Western Steppe Herders (WSH), or Western Steppe Pastoralists, is the name given to a distinct ancestral component first identified in individuals from the Chalcolithic steppe around the start of the 5th millennium BC, subsequently detected in several genetically similar or directly related ancient populations including the Khvalynsk, Repin, Sredny Stog, and Yamnaya cultures, and found in substantial levels in contemporary populations of Europe, Central Asia, South Asia and West Asia. This ancestry is often referred to as Yamnaya ancestry, Yamnaya-related ancestry, Steppe ancestry or Steppe-related ancestry.

Western Steppe Herders are considered to be descended from a merger between Eastern Hunter-Gatherers (EHGs) and Caucasus Hunter-Gatherers (CHGs). The WSH component is modeled as an admixture of EHG and CHG ancestral components in roughly equal proportions, with the majority of the Y-DNA haplogroup contribution from EHG males. The Y-DNA haplogroups of Western Steppe Herder males are not uniform, with the Yamnaya culture individuals mainly belonging to R1b-Z2103 with a minority of I2a2, the earlier Khvalynsk culture also with mainly R1b but also some R1a, Q1a, J, and I2a2, and the later, high WSH ancestry Corded Ware culture individuals mainly belonging to haplogroup R1b in the earliest samples, with R1a-M417 becoming predominant over time.

The Kurgan hypothesis (also known as the Kurgan theory, Kurgan model, or steppe theory) is the most widely accepted proposal to identify the Proto-Indo-European homeland from which the Indo-European languages spread out throughout Europe and parts of Asia. It postulates that the people of a Kurgan culture in the Pontic steppe north of the Black Sea were the most likely speakers of the Proto-Indo-European language (PIE). The term is derived from the Turkic word kurgan (курга́н), meaning tumulus or burial mound.

The steppe theory was first formulated by Otto Schrader (1883) and V. Gordon Childe (1926), then systematized in the 1950s by Marija Gimbutas, who used the term to group various prehistoric cultures, including the Yamnaya (or Pit Grave) culture and its predecessors. In the 2000s, David Anthony instead used the core Yamnaya culture and its relationship with other cultures as a point of reference.

The Andronovo culture is a collection of similar local Late Bronze Age cultures that flourished c. 2000–1150 BC, spanning from the southern Urals to the upper Yenisei River in central Siberia and western Xinjiang in the east. In the south, the Andronovo sites reached Tajikistan and Uzbekistan. It is agreed among scholars that the Andronovo culture was Indo-Iranian. Some researchers have preferred to term it an archaeological complex or archaeological horizon.

Andronovo culture's first stage may have started as early as the waning years of the 3rd millennium BC, with a focus on cattle grazing in the vast grasslands of the region. The slightly older Sintashta culture (c. 2200–1900 BC), formerly included within the Andronovo culture, is now thought to be distinct from Early Andronovo cultures. Allentoft et al. (2015) concluded from their genetic studies that the Andronovo culture and the preceding Sintashta culture were derived from an eastern migration of the Corded Ware culture, given the higher proportion of ancestry matching the earlier farmers of Europe, similar to the admixture found in the genomes of the Corded Ware population.

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.