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The Proto-Indo-European homeland was the prehistoric linguistic homeland of the Proto-Indo-European language (PIE). From this region, its speakers migrated east and west, and formed the proto-communities of the different branches of the Indo-European language family.
The most widely accepted proposal about the location of the Proto-Indo-European homeland is the steppe hypothesis, [note 1] which puts the archaic, early, and late PIE homeland in the Pontic–Caspian steppe around 4000 BCE. [1] [2] [3] [4] [5] A notable second possibility, which has gained renewed attention during the 2010s and 2020s due to aDNA research, is the Armenian hypothesis, which situates the homeland for archaic PIE ('Indo-Hittite') south of the Caucasus mountains. [6] [7] [8] [9] [10] [11] Another contender is the Anatolian hypothesis, which puts it in Anatolia c. 8000 BCE. [1] [12] [13] [14] Several other explanations have been proposed, including the outdated but historically prominent North European hypothesis, the Neolithic creolisation hypothesis, the Paleolithic continuity paradigm, the Arctic theory, and the "indigenous Aryans" (or "out of India") hypothesis. These are not widely accepted, and are considered to be fringe theories. [15] [2] [16]
The search for the homeland of the Indo-Europeans began during the late 18th century with the discovery of the Indo-European language family. [17] The methods used to establish the homeland have been drawn from the disciplines of historical linguistics, archaeology, physical anthropology and, more recently, human population genetics.
The steppe model, the Anatolian model, and the Near Eastern (or Armenian) model are the three main solutions for the Indo-European homeland. [note 2] The steppe model, placing the Proto-Indo-European (PIE) homeland in the Pontic-Caspian steppe about 4000 BCE, [5] is the theory supported by most scholars. [note 1]
According to linguist Allan R. Bomhard (2019), the steppe hypothesis proposed by archeologists Marija Gimbutas and David W. Anthony "is supported not only by linguistic evidence, but also by a growing body of archeological and genetic evidence. The Indo-Europeans have been identified with several cultural complexes existing in that area between 4500—3500 BCE. The literature supporting such a homeland is both extensive and persuasive [...]. Consequently, other scenarios regarding the possible Indo-European homeland, such as Anatolia, have now been mostly abandoned," [18] although critical issues such as the way the proto-Greek, [19] proto-Armenian, [20] [21] proto-Albanian,[ citation needed ] proto-Celtic, [22] and proto-Anatolian [23] languages became spoken in their attested homeland are still debated within the context of the steppe model. [24]
A notable second possibility, which has gained renewed attention since the 2010s, is the "Near Eastern model", [24] also known as the Armenian hypothesis. It was proposed by linguists Tamaz V. Gamkrelidze and Vyacheslav Ivanov in the early 1980s, postulating relationships between Indo-European and Caucasian languages based on the disputed glottalic theory and related to archaeological findings by Grogoriev. [24] Some recent DNA research has resulted in renewed suggestions of the possibility of a Caucasian or northwest Iranian homeland for archaic or 'proto-proto-Indo-European' (also termed 'Indo-Anatolian' or 'Indo-Hittite' in the literature), [25] [note 3] the common ancestor of both Anatolian languages and early proto-IE (from which Tocharian and all other early branches divided). [5] [7] [26] [27] [10] [note 4] These suggestions are disputed in other recent publications, which still locate the origin of the ancestor of proto-Indo-European in the Eastern European/Eurasian steppe [28] [29] [30] or from a hybridization of both steppe and Northwest-Caucasian languages, [30] [note 5] [note 6] while "[a]mong comparative linguists, a Balkan route for the introduction of Anatolian IE is generally considered more likely than a passage through the Caucasus, due, for example, to greater Anatolian IE presence and language diversity in the west." [26]
The Anatolian hypothesis proposed by archeologist Colin Renfrew places the pre-PIE homeland in Anatolia about 8000 BCE, [13] and the homeland of Proto-Indo-European proper in the Balkans around 5000 BCE, with waves of linguistic expansion following the progression of agriculture in Europe. Although it has attracted substantive attention and discussions, the datings it proposes are at odds with the linguistic timeframe for Proto-Indo-European, [2] and with genetic data which do not find evidence for Anatolian origins in the Indian gene pool. [31]
Apart from DNA evidence (see below), Anthony and Ringe (2015) give a number of arguments against the Anatolian hypothesis. [32] First, cognate words for "axle", "wheel", "wagon-pole", and "convey by vehicle" can be found in a number of Indo-European languages ranging from Irish to Tocharian, but not Anatolian. This suggests that Proto-European speakers, after the split with Anatolian, had wheeled vehicles, which the neolithic farmers did not. For various reasons, such as the regular sound-changes which the words exhibit, the suggestion that the words might have spread later by borrowing or have been introduced by parallel innovation in the different branches of Indo-European can be ruled out. Secondly, the words borrowed at an early date by Proto-Uralic, as well as those borrowed from Caucasian languages, indicate a homeland geographically between the Caucasus and the Urals. Thirdly, if the Indo-European languages had spread westwards from Anatolia, it might be expected that Greek would be closest to Anatolian, whereas in fact it is much closer to Indo-Aryan. In addition, the culture described in early poems such as Homer's – praise of warriors, feasting, reciprocal guest-friendship, and so on – more closely match what is known of the burial practices of the steppe peoples than the neolithic farmers.
The most recent DNA findings from ancient bones as well as modern people show that farmers whose ancestors originated in Anatolia did indeed spread across Europe from 6500 BCE onwards, eventually mixing with the existing hunter-gatherer population. However, about 2500 BCE, a massive influx of pastoralists from the steppe north of the Black Sea, associated with Corded Ware culture, spread from the east. Northern Europeans (especially Norwegians, Lithuanians, and Estonians) get nearly half their ancestry from this group; Spanish and Italians about a quarter, and Sardinians almost none. It is thought that this influx of pastoralists brought the Indo-European languages with them. Steppe ancestry is also found in the DNA of speakers of Indo-European languages in India, especially in the Y chromosome, which is inherited in the male line. [33]
In general, the prestige associated with a specific language or dialect and its progressive dominance over others can be explained by the access to a natural resource unknown or unexploited until then by its speakers, which is thought to be horse-based pastoralism for Indo-European speakers rather than crop cultivation. [note 7] [34] [18]
A number of other theories have been proposed, most of which have little or no academic credence presently (see discussion below):
Traditionally, homelands of linguistic families are proposed based on evidence from comparative linguistics coupled with evidence of historical populations and migrations from archaeology. Presently, genetics via DNA samples is increasingly used for the study of ancient population movements.
Using comparative linguistics it is possible to reconstruct the vocabulary found in the proto-language, and in this way achieve some knowledge of the cultural, technological and ecological context that the speakers inhabited. Such a context can then be compared with archaeological evidence. This vocabulary includes, in the case of (late) PIE, which is based on the post-Anatolian and post-Tocharian IE-languages:
Zsolt Simon notes that, although it can be useful to determine the period when the Proto-Indo-European language was spoken, using the reconstructed vocabulary to locate the homeland may be flawed, since we do not know whether Proto-Indo-European speakers knew a specific concept because it was part of their environment or because they had heard of it from other peoples they were interacting with. [44]
Proto-Finno-Ugric and PIE have a lexicon in common, generally related to trade, such as words for "price" and "draw, lead". Similarly, "sell" and "wash" were borrowed in Proto-Ugric. Although some have proposed a common ancestor (the hypothetical Nostratic macrofamily), this is generally regarded as the result of intensive borrowing, which suggests that their homelands were located near each other. Proto-Indo-European also exhibits lexical loans to or from Caucasian languages, particularly Proto-Northwest Caucasian and Proto-Kartvelian, which suggests a location close to the Caucasus mountains. [18] [4]
Gramkelidze and Ivanov, using the now largely unsupported glottalic theory of Indo-European phonology, also proposed Semitic borrowings into Proto-Indo-European, suggesting a more southern homeland to explain these borrowings. According to Mallory and Adams, some of these borrowings may be too speculative or from a later date, but they consider the proposed Semitic loans *táwros 'bull' and *wéyh₁on- 'wine; vine' to be more likely. [43]
Anthony notes that the small number of Semitic loanwords in Proto-Indo-European that are generally accepted by linguists, such as words for bull and silver, could have been borrowed via trade and migration routes rather than through direct contact with the Semitic linguistic homeland. [45]
According to Anthony, the following terminology may be used: [2]
The Anatolian languages are the first Indo-European language family to have been separated from the main group. Due to the archaic elements preserved in the Anatolian languages, they may be a "cousin" of Proto-Indo-European, instead of a "child", but Anatolian is generally regarded as an early offshoot of the Indo-European language group. [2]
The Indo-Hittite hypothesis postulates a common predecessor for both the Anatolian languages and the other Indo-European languages, termed Indo-Hittite or Indo-Anatolian. [2] Although PIE had predecessors, [4] the Indo-Hittite hypothesis is not widely accepted, and there is little to suggest that it is possible to reconstruct a proto-Indo-Hittite stage that differs substantially from what is already reconstructed for PIE. [46]
Anthony (2019) suggests a derivation of the proto-Indo-European language mainly from a base of languages spoken by Eastern European Hunter-Gatherers living in the Volga steppes, with influences from languages spoken by northern Caucasus hunter-gatherers who migrated from the Caucasus to the lower Volga basin, in addition to a possible later and lesser influence from the language of the Maikop culture to the south (which is hypothesized to have belonged to the North Caucasian family) during the later Neolithic or Bronze Age involving little genetic effect. [28]
Lexico-statistical studies intended to show the relationship between the various branches of Indo-European languages began during the late 20th century with work by Dyen et al. (1992) and Ringe et al. (2002). [47] Subsequently, a number of authors performed a Bayesian phylogenetic analysis of the IE languages (a mathematical method used for evolutionary biology to establish relationships between species). [48] A secondary intent of these studies was to attempt to estimate the approximate dates at which the various branches separated from each other.
The earlier studies tended to estimate a relatively long time-frame for the development of the different branches. In particular the study by Bouckaert and colleagues (which included a geographical element) was "decisively" in favour of Anatolia as the geographical origin, and assisted Colin Renfrew's hypothesis that Indo-European spread from Anatolia along with agriculture from 7500 to 6000 BCE onwards. According to their analysis, the five major Indo-European subfamilies – Celtic, Germanic, Italic, Balto-Slavic and Indo-Iranian – all emerged as distinct lineages between 4000 and 2000 BCE. The authors stated that this time-scale is consistent with secondary movements such as the expansion of the steppe peoples after 3000 BCE, which they suggest also played a role in the spread of Indo-European languages.
The steppe hypothesis seeks to identify the source of the Indo-European language expansion as a succession of migrations from the Pontic–Caspian steppe between the 5th and 3rd millennia BCE. [49] During the early 1980s, [50] a mainstream consensus had emerged among Indo-Europeanists in favour of the "Kurgan hypothesis" (named after the kurgans, burial mounds, of the Eurasian steppes) placing the Indo-European homeland in the Pontic–Caspian steppe of the Chalcolithic. [51] [2]
According to the Kurgan hypothesis as formulated by Gimbutas, Indo-European speaking nomads from Eastern Ukraine and Southern Russia expanded on horseback in several waves during the 3rd millennium BCE, invading and subjugating supposedly peaceful European Neolithic farmers of Gimbutas's Old Europe. [note 8] Later versions of Gimbutas's hypothesis increasingly emphasized the patriarchal and patrilineal nature of the invading culture, in contrast with the supposedly egalitarian and matrilineal culture of the invaded.
J. P. Mallory, dating the migrations to c. 4000 BCE, and having less insistence on their violent or quasi-military nature, essentially modified Gimbutas's theory making it compatible with a less gender-political narrative. David Anthony, emphasizing mostly the evidence for the domestication of horses and the presence of wheeled vehicles, came to regard specifically the Yamna culture, which replaced the Sredny Stog culture about 3500 BCE, as the most likely candidate for the Proto-Indo-European speech community. [2]
Anthony describes the spread of cattle-raising from early farmers in the Danube Valley into the Ukrainian steppes in the 6th–5th millennium BCE, forming a cultural border with the hunter-gatherers [2] whose languages may have included archaic PIE. [2] Anthony notes that domesticated cattle and sheep probably didn't enter the steppes from the Transcaucasia, since the early farming communities there were not widespread, and separated from the steppes by the glaciated Caucasus. [2] Subsequent cultures developed in this area which adopted cattle, most notably the Cucuteni-Trypillian culture. [2]
Asko Parpola regards the Cucuteni-Trypillian culture as the birthplace of wheeled vehicles, and therefore as the homeland for Late PIE, assuming that Early PIE was spoken by Skelya pastoralists (early Sredny Stog culture [2] ) who took over the Tripillia culture at c. 4300–4000 BCE. [52] On its eastern border lay the Sredny Stog culture (4400–3400 BCE), [2] whose origins are related to "people from the east, perhaps from the Volga steppes". [2] It plays the main role in Gimbutas's Kurgan hypothesis, [2] and coincides with the spread of early PIE across the steppes [2] and into the Danube valley (c. 4000 BCE), [2] resulting in the end of Old Europe. [2] Hereafter the Maykop culture suddenly began, Tripillia towns grew strongly, and eastern steppe people migrated to the Altai mountains, founding the Afanasevo culture (3300 to 2500 BCE). [2]
The core element of the steppe hypothesis is the identification of the proto-Indo-European culture as a nomadic pastoralist society that did not practice intensive agriculture. This identification rests on the fact that vocabulary related to cows, to horses and horsemanship, and to wheeled vehicles can be reconstructed for all branches of the family, whereas only a few agricultural vocabulary items are reconstructable, suggesting a gradual adoption of agriculture through contact with non-Indo-Europeans. If this evidence and reasoning is accepted, the search for the Indo-European proto-culture has to involve searching for the earliest introduction of domesticated horses and wagons into Europe. [4]
Responding to these arguments, proponents of the Anatolian hypothesis Russell Gray and Quentin Atkinson have argued that the different branches could have independently developed similar vocabulary based on the same roots, creating the false appearance of shared inheritance – or alternatively, that the words related to wheeled vehicle might have been borrowed across Europe at a later date. Proponents of the Steppe hypothesis have argued this to be unlikely, and to violate the established principles for reasonable assumptions when explaining linguistic comparative data. [4]
Another source of evidence for the steppe hypothesis is the presence of what appears to be many shared loanwords between Uralic languages and proto-Indo-European, suggesting that these languages were spoken in adjacent areas. This would have had to occur much further north than the Anatolian or Near Eastern scenarios would allow. [4] According to Kortlandt, Indo-Uralic is the common ancestor of the Indo-European and Uralic language families. [53] Kortlandt argues that "Indo-European is a branch of Indo-Uralic which was radically transformed under the influence of a North Caucasian substratum when its speakers moved from the area north of the Caspian Sea to the area north of the Black Sea." [53] [note 9] [note 6] Anthony notes that the validity of such deep relationships cannot be reliably demonstrated due to the time-depth involved, and also notes that the similarities may be explained by borrowings from PIE into proto-Uralic. [4] Yet, Anthony also notes that the North Caucasian communities "were southern participants in the steppe world". [2]
Kloekhorst argues that the Anatolian languages have preserved archaisms which are also found in proto-Uralic, providing strong evidence for a steppe-origin of PIE. [54]
The subclade R1a1a (R-M17 or R-M198) is the R1a subclade associated most commonly with Indo-European speakers. In 2000, Ornella Semino et al. proposed a postglacial (Holocene) period spread of the R1a1a haplogroup from north of the Black Sea during the time of the Late Glacial Maximum, which was subsequently magnified by the expansion of the Kurgan culture into Europe and eastward. [55] [ obsolete source ]
In 2015, a large-scale ancient DNA study by Haak et al. published in Nature found evidence of a "massive migration" from the Pontic-Caspian steppe to central Europe that occurred about 4,500 years ago. [5] It found that individuals from the central European Corded Ware culture (3rd millennium BCE) were closely related genetically to individuals from the Yamnaya culture. [5] The authors concluded that their "results provide support for the theory of a steppe origin of at least some of the Indo-European languages of Europe". [31] [56]
Two other genetic studies in 2015 gave support to the steppe hypothesis regarding the Indo-European Urheimat. According to those studies, specific subclades of Y chromosome haplogroups R1b and R1a, which are found in Yamnaya and other proposed early Indo-European cultures such as Sredny Stog and Khvalynsk, [57] [58] and are now the most common in Europe (R1a is also common in South Asia) would have expanded from the Ukrainian and Russian steppes, along with the Indo-European languages; these studies also detected an autosomal component present in modern Europeans that was not present in Neolithic Europeans, which would have been introduced with paternal lineages R1b and R1a, as well as Indo-European languages. [5] [59] [60]
However, the folk-migration model cannot be the only diffusion theory for all linguistic families, as the Yamnaya ancestry component is particularly concentrated in Europe in the northwestern parts of the continent. Other models for languages like Proto-Greek are still debated. The steppe genetic component is more diffuse in studied Mycenaean populations: if they came from elsewhere, Proto-Greek speakers were certainly a minority in a sea of populations that had been familiar with agriculture for 4,000 years. [19] Some propose that they gained progressive prominence through a cultural expansion by elite influence. [18] But if high correlations can be proven in ethnolinguistic or remote communities, genetics does not always equate with language, [61] and archaeologists have argued that although such a migration might have occurred it does not necessarily explain either the distribution of archaeological cultures or the spread of the Indo-European languages. [62]
Russian archaeologist Leo Klejn (2017) noted that in the Yamnaya population, R1b-L23 is predominant, whereas Corded Ware males belong mostly to R1a, as well as far-removed R1b clades not found in Yamnaya. In his opinion, this does not support a Yamnaya origin for the Corded Ware culture. [63] British archaeologist Barry Cunliffe describes this inconsistency as "disconcerting for the model as a whole". [64] Klejn has also suggested that the autosomal evidence does not support a proposed Yamnaya migration, as Western Steppe Herder ancestry is lesser in the area from which the Yamnaya were proposed to have expanded, in both contemporary populations and Bronze Age specimens. [65]
Furthermore, Balanovsy et al. [66] (2017) found that the majority of the Yamnaya genomes studied by Haak and Mathieson belonged to the "eastern" R-GG400 subclade of R1b-L23, which is not common in western Europe, and none belonged to the "western" R1b-L51 branch. The authors conclude that the Yamnaya could not have been an important source of modern western European male haplogroups.
An analysis by David Anthony (2019) suggested a genetic origin of Proto-Indo-Europeans (associated with the Yamnaya culture) in the Eastern European steppe north of the Caucasus, deriving from a mixture of Eastern European hunter-gatherers (EHG) and hunter-gatherers from the Caucasus (CHG). Anthony also suggested that the Proto-Indo-European language formed mainly from a base of languages spoken by Eastern European hunter-gathers with influences from languages of northern Caucasus hunter-gatherers, in addition to a possible later and more minor influence from the language of the Maykop culture to the south (which is hypothesized to have belonged to the North Caucasian languages) during the later Neolithic or Bronze Age, involving little genetic effect. [28]
In 2020, David Anthony offered a new hypothesis, with the intent of resolving the questions concerning the apparent absence of haplogroup R1a in Yamnaya. He speculates that haplogroup R1a must have been present in the Yamnaya, but that it was initially extremely rare, and that the Corded Ware culture are the descendants of this wayward population that migrated north from the Pontic steppe and greatly expanded in size and influence, later returning to dominate the Pontic-Caspian steppe. [67]
The main competitor of the Kurgan hypothesis is the Anatolian hypothesis advanced by Colin Renfrew in 1987. It couples the spread of the Indo-European languages to the demonstrated fact of the Neolithic spread of farming from the Near East, stating that the Indo-European languages began to spread peacefully into Europe from Asia Minor from around 7000 BCE with the Neolithic advance of farming (wave of advance). The expansion of agriculture from the Middle East would have diffused three language families: Indo-European toward Europe, Dravidian toward Pakistan and India, and Afro-Asiatic toward Arabia and North Africa.
According to Renfrew (2004) [ full citation needed ], the spread of Indo-European proceeded in the following phases:[ citation needed ]
Reacting to criticism, Renfrew revised his proposal to the effect of taking a pronounced Indo-Hittite position. Renfrew's revised opinion places only Pre-Proto-Indo-European in 7th millennium BCE Anatolia, proposing as the homeland of Proto-Indo-European proper the Balkans about 5000 BCE, explicitly identified as the "Old European culture" proposed by Marija Gimbutas. He thus still situates the original source of the Indo-European language family in Anatolia c. 7000 BCE. Reconstructions of a Bronze Age PIE society based on vocabulary items like "wheel" do not necessarily hold for the Anatolian branch, which appears to have separated from PIE at an early stage, prior to the invention of wheeled vehicles. [68]
After the publication of several studies on ancient DNA in 2015, Colin Renfrew has accepted the reality of migrations of populations speaking one or several Indo-European languages from the Pontic steppe towards Northwestern Europe. [69] [34]
The main objection to this theory is that it requires an unrealistically early date. [4] According to linguistic analysis, the Proto-Indo-European lexicon seems to include words for a range of inventions and practices related to the Secondary Products Revolution, which post-dates the early spread of farming. On lexico-cultural dating, Proto-Indo-European cannot be earlier than 4000 BCE. [70] Furthermore, it has been objected, on impressionistic grounds, that it seems unlikely that close equivalences such as Hittite [eːsmi, eːsi, eːst͜si] = Sanskrit [ásmi, ási, ásti] ("I am, you are, he is") could have survived over such a long timescale as the Anatolian hypothesis requires. [71]
The idea that farming was spread from Anatolia in a single wave has been revised. Instead, it appears to have spread in several waves by several routes, primarily from the Levant. [72] The trail of plant domesticates indicates an initial foray from the Levant by sea. [73] The overland route via Anatolia seems to have been most significant in spreading farming into south-east Europe. [74]
According to Lazaridis et al. (2016), farming developed independently both in the Levant and in the eastern Fertile Crescent. [31] After this initial development, the two regions and the Caucasus interacted, and the chalcolithic north-west Iranian population appears to be a mixture of Iranian Neolithic, Levant, and Caucasus hunter-gatherers. [31] According to Lazaridis et al. (2016), "farmers related to those from Iran spread northward into the Eurasian steppe; and people related to both the early farmers of Iran and to the pastoralists of the Eurasian steppe spread eastward into South Asia". [75] They further note that ANI (Ancestral North Indian) "can be modelled as a mix of ancestry related to both early farmers of western Iran and to people of the Bronze Age Eurasian steppe", [75] which makes it unlikely that the Indo-European languages in India are derived from Anatolia. [31]
According to Alberto Piazza "[i]t is clear that, genetically speaking, peoples of the Kurgan steppe descended at least in part from people of the Middle Eastern Neolithic who immigrated there from Anatolia." [76] According to Piazza and Cavalli-Sforza, the Yamna culture may have been derived from Middle Eastern Neolithic farmers who migrated to the Pontic steppe and developed pastoral nomadism:
... if the expansions began at 9,500 years ago from Anatolia and at 6,000 years ago from the Yamnaya culture region, then a 3,500-year period elapsed during their migration to the Volga-Don region from Anatolia, probably through the Balkans. There a completely new, mostly pastoral culture developed under the stimulus of an environment unfavorable to standard agriculture, but offering new attractive possibilities. Our hypothesis is, therefore, that Indo-European languages derived from a secondary expansion from the Yamnaya culture region after the Neolithic farmers, possibly coming from Anatolia and settled there, developing pastoral nomadism. [77]
Wells agrees with Cavalli-Sforza that there is "some genetic evidence for migration from the Middle East":
... while we see substantial genetic and archaeological evidence for an Indo-European migration originating in the southern Russian steppes, there is little evidence for a similarly massive Indo-European migration from the Middle East to Europe. One possibility is that, as a much earlier migration (8,000 years old, as opposed to 4,000), the genetic signals carried by Indo-European-speaking farmers may simply have dispersed over the years. There is clearly some genetic evidence for migration from the Middle East, as Cavalli-Sforza and his colleagues showed, but the signal is not strong enough for us to trace the distribution of Neolithic languages throughout the entirety of Indo-European-speaking Europe. [78]
Varying ideas have been proposed regarding the location of archaic PIE, including the Eurasian/Eastern European steppe, the Caucasus to the south, or a mixed origin derived from both regions.
Gamkrelidze and Ivanov claimed that the Urheimat was south of the Caucasus, specifically, "within eastern Anatolia, the southern Caucasus and northern Mesopotamia" during the 5th to 4th millennia BCE. [79] Their proposal was based on a disputed theory of glottal consonants in PIE. According to Gamkrelidze and Ivanov, PIE words for material culture objects imply contact with more advanced peoples to the south, the existence of Semitic loan-words in PIE, Kartvelian borrowings from PIE, some contact with Sumerian, Elamite and others. However, given that the glottalic theory never became accepted very strongly and there was little archaeological evidence, the Gamkrelidze and Ivanov theory did not gain credence until Renfrew's Anatolian theory revived aspects of their proposal. [4]
Gamkrelidze and Ivanov proposed that the Greeks moved west across Anatolia to their present location, a northward movement of some IE speakers that brought them into contact with the Finno-Ugric languages, and suggested that the Kurgan area, or better "Black Sea and Volga steppe", was a secondary homeland from which the western IE languages emerged. [80]
Recent DNA research which shows that the steppe-people derived from a mix of Eastern Hunter-Gatherers (EHG) and Caucasus Hunter-Gatherers, [note 10] [note 11] has resulted in renewed suggestions of the possibility of a Caucasian, or even Iranian, homeland for an archaic proto-Indo-European, the common ancestor of both Anatolian languages and all other Indo-European languages. [83] [note 3] It is argued that this may support the Indo-Hittite hypothesis, according to which both proto-Anatolian and proto-Indo-European separated from a common language "no later than the 4th millennium BCE." [23] Suggestions in this regard have been made by Haak et al. (2015 , p. 138, Supplementary Information), Reich (2018 , p. 120), Damgaard (2018 , p. 7), Wang et al. (2019 , p. 19), Grolle (2018 , p. 108), Krause & Trappe (2021 , pp. 122, 186), Lazaridis et al. (2022); see also [note 4]
Damgaard et al. (2018) found that sampled Copper Age and Bronze Age Anatolians all had similar levels of CHG ancestry, but no EHG ancestry. They conclude that Early and Middle Bronze Age Anatolia did not receive ancestry from steppe populations, indicating that Indo-European language spread into Anatolia was not associated with large migrations from the steppe. The authors assert that their data is consistent with a scenario in which Indo-European languages were introduced to Anatolia in association with CHG admixture before c. 3700 BCE, in contrast to the standard steppe model, and despite the association of CHG ancestry with several non-Indo-European languages. Nevertheless, a second possibility, that Indo-European languages came to Anatolia along with small scale population movements and commerce, is described by them as also consistent with the data. They note that "Among comparative linguists, a Balkan route for the introduction of Anatolian IE is generally considered more likely than a passage through the Caucasus, due, for example, to greater Anatolian IE presence and language diversity in the west." [8] [note 12]
Wang et al. (2019) note that the Caucasus and the steppes were genetically separated in the 4th millennium BCE, [87] but that the Caucasus served as a corridor for gene flow between cultures south of the Caucasus and the Maykop culture during the Copper and the Bronze Age, speculating that this "opens up the possibility of a homeland of PIE south of the Caucasus," [88] which "could offer a parsimonious explanation for an early branching off of Anatolian languages, as shown on many PIE tree topologies." [88] According to Wang et al. (2019), the typical steppe-ancestry, as an even mix between EHG and CHG, may result from "an existing natural genetic gradient running from EHG far to the north to CHG/Iran in the south," or it may be explained as "the result of Iranian/CHG-related ancestry reaching the steppe zone independently and prior to a stream of AF [Anatolian Farmer] ancestry." [note 11] Wang et al. argue that evidence for gene flow to the steppe allows for a possible Indo-European homeland south of the Caucasus mountains. According to this model, Indo-European languages could have been brought north together with CHG ancestry, a scenario which could also explain the early separation from Anatolian. They note that "the spread of some or all of the PIE branches would have been possible via the North Pontic/Caucasus region and from there, along with pastoralist expansions, to the heart of Europe." [93] However, Wang et al. also acknowledge that "the spread of some or all of the PIE branches would have been possible via the North Pontic/Caucasus region," as explained in the steppe hypothesis. [88] [note 13]
Lazaridis et al. (2022) state that the genetic evidence is consistent with an origin of Proto-Indo-European either in the EHGs of the steppe, or in the south (the southern arc), but argue that their evidence points to the latter. They argue that genetic evidence from the 'Southern Arc', an area which includes Anatolia, North Mesopotamia, Western Iran, Armenia, Azerbaijan, and the Caucasus, allows the possibility of a West Asian homeland for the Proto-Indo-European language. [note 14] In this opinion, Proto-Indo-European emerged in the southern arc, and was brought to Anatolia when Caucasus/Levantine-related ancestry flowed into Anatolia after the Neolithic, separating the Proto-Anatolian language from the rest of the Indo-European languages. They propose that subsequent migrations from the southern arc brought Proto-Indo-European to the steppes. [note 15] According to Lazaridis et al., the spread of all other (non-Anatolian) ancient Indo-European languages is associated with the migrations of Yamnaya pastoralists or genetically related populations. The study argues that Anatolian languages cannot be linked to steppe migrations due to the absence of EHG ancestry in ancient Anatolians, despite what the study describes as extensive sampling, including possible entry points into Anatolia by land or sea. The authors caution that they cannot yet identify the ultimate sources of population movements from the Southern Arc without further sampling of the possible source populations. [94]
Bomhard's Caucasian substrate hypothesis (2017, 2019) proposes an origin (Urheimat) in a Central Asian or North Caspian region of the steppe for Indo-Uralic (a proposed common ancestor of Indo-European and Uralic). [95] [96] Bomhard elaborates on Johanna Nichols "Sogdiana hypothesis", and Kortlandt's ideas of an Indo-Uralic proto-language, proposing an Urheimat north or east of the Caspian Sea, of a Eurasiatic language which was imposed on a population which spoke a Northwest Caucasian language, with this mixture producing proto-Indo-European. [96] [95] [note 5] [note 6]
Indo-European specialist and anthropologist David Anthony (2019) criticizes the Southern/Caucasian homeland hypothesis (including the suggestions of those such as Reich, Kristiansen, and Wang). [28] [29] Instead, Anthony argues that the roots of the proto-Indo-European language formed mainly from a base of languages spoken by Eastern European hunter-gatherers, with some influences from the languages of Caucasus hunter-gatherers. Anthony rejects the possibility that the Bronze Age Maykop people of the Caucasus were a southern source of language and genetics of Indo-European. [28] [29] Referring to Wang et al. (2019), he notes that the Anatolian Farmer component in the Yamnaya-ancestry came from European farmers, not from the Maykop, which had too much Anatolian farmer ancestry to be ancestral to the Yamnaya-population. [107] Anthony also notes that the paternal lineages of the Yamnaya, which were rich in R1b, were related to those of earlier Eastern European hunter-gatherers, rather than those of southern or Caucasus peoples such as the Maykop. [108] Anthony rejects the possibility that the Bronze Age Maykop people of the Caucasus were a southern source of language and genetics of Indo-European. According to Anthony, referring to Wang et al. (2019), [note 16] the Maykop culture had little genetic effect on the Yamnaya, whose paternal lineages were found to differ from those found in Maykop remains, but were instead related to those of earlier Eastern European hunter-gatherers. Also, the Maykop (and other contemporary Caucasus samples), along with CHG from this date, had significant Anatolian Farmer ancestry "which had spread into the Caucasus from the west after about 5000 BC", while the Yamnaya had a lower percentage which does not fit with a Maykop origin. Partly for these reasons, Anthony concludes that Bronze Age Caucasus groups such as the Maykop "played only a minor role, if any, in the formation of Yamnaya ancestry." According to Anthony, the roots of Proto-Indo-European (archaic or proto-proto-Indo-European) were mainly in the steppe rather than the south. Anthony considers it likely that the Maykop spoke a Northern Caucasian language not ancestral to Indo-European. [28] [29] [28]
Anthony proposes that the Yamnaya derived mainly from Eastern European hunter-gatherers (EHG) from the steppes, and undiluted Caucasus hunter-gatherers (CHG) from northwestern Iran or Azerbaijan, similar to the Hotu cave population, who mixed in the Eastern European steppe north of the Caucasus. According to Anthony, hunting-fishing camps from the lower Volga, dated 6200–4500 BCE, could be the remains of people who contributed the CHG-component, migrating westwards along the coast of the Caspian Sea, from an area south-east of the Caspian Sea. They mixed with EHG-people from the north Volga steppes, and the resulting culture contributed to the Sredny Stog culture, a predecessor of the Yamnaya culture. [28]
Anthony (2024), addressing Lazaridis (2022), differentiates Early PIE (EPIE), prior to the Anatolian separation, from Late PIE (LPIE), also known as Core or Nuclear PIE, the ancestor of all other IE branches and evidencing the hypothesis that the LPIE dialects were spoken in the Pontic-Caspian steppes 3500-2500 BCE. He states that a homeland for early PIE in the Caucasus or the Pontic-Caspian steppe are both possibilities but that the second is the position supported. He also argues for the possibility of a steppe origin for the Anatolian branch, proposing that, "the Anatolian split could have been caused by a migration from the steppes into the Balkans associated with the Csongrad grave...and other Eneolithic steppe derived graves in the lower Danube valley", and that, in that area, steppe autosomal DNA could have been " lost a millennium later through local admixture before they moved to Anatolia", accounting for its absence in Anatolia (citing a similar case in Armenia). [109]
Lothar Kilian and Marek Zvelebil have proposed a 6th millennium BCE or later origin of the IE-languages in Northern Europe, as a creolisation of migrating Neolithic farmers settling in northern Europe, and mixing with indigenous Mesolithic hunter-gatherer communities. [36] The steppe theory is compatible with the argument that the PIE homeland must have been larger, [49] because the "Neolithic creolisation hypothesis" allows the Pontic-Caspian region to have been part of PIE territory.
The Paleolithic continuity theory (also labeled "Paleolithic Continuity Paradigm" by Mario Alinei, its main proponent) is a hypothesis suggesting that the Proto-Indo-European language (PIE) can be traced back to the Upper Paleolithic, several millennia earlier than the Chalcolithic or at the most Neolithic estimates in other scenarios of Proto-Indo-European origins. Its claims are linguistically very improbable and depend on the assumption that there is no genetic and archaeological evidence for major population turnovers in Europe since the Last Glacial Maximum. [110]
It was not listed by Mallory in 1997 among the proposals for the origins of the Indo-European languages that are widely discussed and considered credible by academia. [111]
Soviet Indologist Natalia R. Guseva [112] and Soviet ethnographer S. V. Zharnikova, [113] influenced by Bal Gangadhar Tilak's 1903 work The Arctic Home in the Vedas , argued for a northern Urals Arctic homeland of the Indo-Aryan and Slavic people; [114] their ideas were popularized by Russian nationalists. [115]
The Indigenous Aryans theory, also known as the "out of India" theory, proposes an Indian origin for the Indo-European languages. The languages of northern India and Pakistan, including Hindi and the historically and culturally significant liturgical language Sanskrit, belong to the Indo-Aryan branch of the Indo-European language family. [116] The Steppe model, rhetorically presented as an "Aryan invasion", has been opposed by Hindu revivalists and Hindu nationalists, [117] [118] who argue that the Aryans were indigenous to India, and some, such as B. B. Lal, [119] Koenraad Elst [120] [121] and Shrikant Talageri, [122] have proposed that Proto-Indo-European itself originated in northern India, either with or shortly before the Indus Valley civilisation. [118] [123] This "out of India" theory is not regarded as plausible by mainstream scholarship. [123] [124] [125]
The Indo-Iranian languages constitute the largest and southeasternmost extant branch of the Indo-European language family. They include over 300 languages, spoken by around 1.5 billion speakers, predominantly in South Asia, West Asia and parts of Central Asia.
The Proto-Indo-Europeans are a hypothetical prehistoric ethnolinguistic group of Eurasia who spoke Proto-Indo-European (PIE), the reconstructed common ancestor of the Indo-European language family.
The Corded Ware culture comprises a broad archaeological horizon of Europe between c. 3000 BC – 2350 BC, thus from the late Neolithic, through the Copper Age, and ending in the early Bronze Age. Corded Ware culture encompassed a vast area, from the contact zone between the Yamnaya culture and the Corded Ware culture in south Central Europe, to the Rhine in the west and the Volga in the east, occupying parts of Northern Europe, Central Europe and Eastern Europe. Autosomal genetic studies suggest that the Corded Ware culture originated from the westward migration of Yamnaya-related people from the steppe-forest zone into the territory of late Neolithic European cultures, evolving in parallel with the Yamnaya, with no evidence of direct male-line descent between them.
Proto-Indo-European (PIE) is the reconstructed common ancestor of the Indo-European language family. No direct record of Proto-Indo-European exists; its proposed features have been derived by linguistic reconstruction from documented Indo-European languages.
Proto-Indo-European society is the reconstructed culture of Proto-Indo-Europeans, the ancient speakers of the Proto-Indo-European language, ancestor of all modern Indo-European languages.
The Kurgan hypothesis 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 Yamnaya culture or the Yamna culture, also known as the Pit Grave culture or Ochre Grave culture, is a late Copper Age to early Bronze Age archaeological culture of the region between the Southern Bug, Dniester, and Ural rivers, dating to 3300–2600 BC. It was discovered by Vasily Gorodtsov following his archaeological excavations near the Donets River in 1901–1903. Its name derives from its characteristic burial tradition: Я́мная is a Russian adjective that means 'related to pits ', as these people used to bury their dead in tumuli (kurgans) containing simple pit chambers. Research in recent years has found that Mikhaylovka, in lower Dnieper river, Ukraine, formed the Core Yamnaya culture.
The Maykop culture or Maikop culture, c. 3700 BC–3000 BC, is a major Bronze Age archaeological culture in the western Caucasus region.
The Sredny Stog culture or Serednii Stih culture is a pre-Kurgan archaeological culture from the mid. 5th – mid. 4th millennia BC. It is named after the Dnieper river islet of today's Serednii Stih, Ukraine, where it was first located.
The Khvalynsk culture is a Middle Copper Age Eneolithic culture of the middle Volga region. It takes its name from Khvalynsk in Saratov Oblast. It was preceded by the Early Eneolithic Samara culture.
The Dnieper–Donets culture complex (DDCC) is a Mesolithic and later Neolithic archaeological culture found north of the Black Sea and dating to ca. 5000-4200 BC. It has many parallels with the Samara culture, and was succeeded by the Sredny Stog culture.
Poltavka culture was an early to middle Bronze Age archaeological culture which flourished on the Volga-Ural steppe and the forest steppe in 2800—2100 BCE.
The Indo-Aryan migrations were the migrations into the Indian subcontinent of Indo-Aryan peoples, an ethnolinguistic group that spoke Indo-Aryan languages. These are the predominant languages of today's Bangladesh, Maldives, Nepal, North India, Pakistan, and Sri Lanka.
The Anatolian hypothesis, also known as the Anatolian theory or the sedentary farmer theory, first developed by British archaeologist Colin Renfrew in 1987, proposes that the dispersal of Proto-Indo-Europeans originated in Neolithic Anatolia. It is the main competitor to the Kurgan hypothesis, or steppe theory, which enjoys more academic favor.
The Armenian hypothesis, also known as the Near Eastern model, is a theory of the Proto-Indo-European homeland, initially proposed by linguists Tamaz V. Gamkrelidze and Vyacheslav Ivanov in the early 1980s, which suggests that the Proto-Indo-European language was spoken during the 5th–4th millennia BC in "eastern Anatolia, the southern Caucasus, and northern Mesopotamia".
The Horse, the Wheel, and Language: How Bronze-Age Riders from the Eurasian Steppes Shaped the Modern World is a 2007 book by the anthropologist David W. Anthony, in which the author describes his "revised Kurgan theory." He explores the origins and spread of the Indo-European languages from the Pontic–Caspian steppe throughout Western Europe, Central Asia, and South Asia. He shows how the domesticated horse and the invention of the wheel mobilized the steppe herding societies in the Eurasian Steppe, and combined with the introduction of bronze technology and new social structures of patron-client relationships gave an advantage to the Indo-European societies. The book won the Society for American Archaeology's 2010 Book Award.
The Indo-European migrations are hypothesized migrations of peoples who spoke Proto-Indo-European (PIE) and the derived Indo-European languages, which took place from around 4000 to 1000 BCE, potentially explaining how these related languages came to be spoken across a large area of Eurasia spanning from the Indian subcontinent and Iranian plateau to Atlantic Europe, in a process of cultural diffusion.
Caucasus hunter-gatherer (CHG), also called Satsurblia cluster, is an anatomically modern human genetic lineage, first identified in a 2015 study, based on the population genetics of several modern Western Eurasian populations.
In archaeogenetics, eastern hunter-gatherer (EHG), sometimes east European hunter-gatherer or eastern European hunter-gatherer, is a distinct ancestral component that represents Mesolithic hunter-gatherers of Eastern Europe.
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 turn 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 European, Central Asian, South Asian and West Asian populations. This ancestry is often referred to as Yamnaya ancestry, Yamnaya-related ancestry, Steppe ancestry or Steppe-related ancestry.
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