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Steppe theory

Theory of Indo-European origin

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Indo-European expansions, based on Anthony (2007), "The Horse, the Wheel, and Language" Narasimhan et al. (2019), "The formation of human populations in South and Central Asia" Anthony (2019), "Reply
Joshua Jonathan · CC BY-SA 4.0

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Through Eastern Europe and Neolithic

The steppe theory was first formulated by Otto Schrader (1883) and V. Gordon Childe (1926), then systematized in the 1950s by Marija Gimbutas in her Kurgan model, 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.

Gimbutas defined the Kurgan culture as composed of four successive periods, with the earliest (Kurgan I) including the Samara and Seroglazovka cultures of the Dnieper–Volga region in the Copper Age (early 4th millennium BC). The people of these cultures were nomadic pastoralists, who, according to the model, by the early 3rd millennium BC had expanded throughout the Pontic–Caspian steppe and into Eastern Europe.

Genetics studies in the 21st century have demonstrated that populations bearing specific Y-DNA haplogroups and a distinct genetic signature expanded into Europe and South Asia from the Pontic-Caspian steppe during the third and second millennia BC. These migrations provide a plausible explanation for the spread of at least some of the Indo-European languages, and suggest that the alternative theories such as the Anatolian hypothesis, which places the Proto-Indo-European homeland in Neolithic Anatolia, are less likely to be correct.

History

Predecessors

Arguments for the identification of the Proto-Indo-Europeans as steppe nomads from the Pontic–Caspian region had already been made in the 19th century by the German scholars Theodor Benfey (1869) and Victor Hehn (1870), followed notably by Otto Schrader (1883, 1890). Theodor Poesche had proposed the nearby Pinsk Marshes. In his standard work about PIE and to a greater extent in a later abbreviated version, Karl Brugmann took the view that the linguistic homeland could not be identified exactly by the scholarship of his time, but he tended toward Schrader's view. However, after Karl Penka's 1883 rejection of non-European PIE origins, most scholars favoured a Northern European origin.

The view of a Pontic origin was still strongly supported, including by the archaeologists V. Gordon Childe and Ernst Wahle. One of Wahle's students was Jonas Puzinas, who became one of Marija Gimbutas's teachers. Gimbutas, who acknowledged Schrader as a precursor, painstakingly marshalled a wealth of archaeological evidence from the territory of the Soviet Union and the Eastern Bloc that was not readily available to Western scholars, revealing a fuller picture of prehistoric Europe.

Overview

When it was first proposed in 1956, in The Prehistory of Eastern Europe, Part 1, Gimbutas's contribution to the search for Indo-European origins was an interdisciplinary synthesis of archaeology and linguistics. The Kurgan model of Indo-European origins identifies the Pontic–Caspian steppe as the Proto-Indo-European (PIE) homeland, and a variety of late PIE dialects are assumed to have been spoken across this region. According to this model, the Kurgan culture gradually expanded to the entire Pontic–Caspian steppe, Kurgan IV being identified with the Yamnaya culture of around 3000 BC.

The mobility of the Kurgan culture facilitated its expansion over the entire region and is attributed to the domestication of the horse followed by the use of early chariots. The first strong archaeological evidence for the domestication of the horse comes from the Sredny Stog culture north of the Azov Sea in Ukraine, and would correspond to an early PIE or pre-PIE nucleus of the 5th millennium BC. Subsequent expansion beyond the steppes led to hybrid, or in Gimbutas's terms "kurganized" cultures, such as the Globular Amphora culture to the west. From these kurganized cultures came the immigration of Proto-Greeks to the Balkans and the nomadic Indo-Iranian cultures to the east around 2500 BC.

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