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Pre-modern human migration

Human movement over the earth

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Through Human migration, Turkic peoples and Early modern period

This article focusses on prehistorical migration since the Neolithic period until AD 1800. See Early human migrations for migration prior to the Neolithic, History of human migration for modern history, and human migration for contemporary migration.

In the wake of the population movements of the Mesolithic came the Neolithic Revolution, followed by the Indo-European expansion in Eurasia and the Bantu expansion in Africa.

Population movements of the proto-historical or early historical period include the Migration period, followed by (or connected to) the Slavic, Magyar, Norse, Turkic and Mongol expansions of the medieval period.

The last world regions to be permanently settled were the Pacific Islands and the Arctic, reached during the 1st millennium AD.

Since the beginning of the Age of Exploration and the beginning of the Early Modern period and its emerging colonial empires, an accelerated pace of migration on the intercontinental scale became possible.

Prehistory

Neolithic to Chalcolithic

Agriculture is believed to have first been practised around 10,000 BC in the Fertile Crescent in places like Jericho. From there, it propagated as a "wave" across Europe, a view supported by Archaeogenetics, reaching northern Europe some 5 millennia ago. Millet was an early crop domesticated in Northern China 9,000 BC (11 kya).

The Neolithic farmers, called the Early European Farmers (EEF), migrated probably from Anatolia to the Balkans in large numbers during the 7th millennium BC and mixed at various frequencies with the earlier Mesolithic hunter-gatherer population.

During the Chalcolithic and early Bronze Age, the EEF-derived cultures of Europe were overwhelmed by successive invasions of Western Steppe Herders (WSHs) from the Pontic–Caspian steppe, who carried about 60% Eastern Hunter-Gatherer (EHG) and 40% Caucasus Hunter-Gatherer (CHG) admixture. These invasions led to EEF paternal DNA lineages in Europe being almost entirely replaced with EHG/WSH paternal DNA (mainly R1b and R1a). EEF maternal DNA (mainly haplogroup N) also declined, being supplanted by steppe lineages, suggesting the migrations involved both males and females from the steppe. EEF mtDNA however remained frequent, suggesting admixture between WSH males and EEF females.

Some evidence (including a 2016 study by Busby et al.) suggests admixture from an ancient migration from Eurasia into parts of Sub-Saharan Africa. Another study (Ramsay et al. 2018) also shows evidence that ancient Eurasians migrated into Africa and that Eurasian admixture in modern Sub-Saharan Africans ranges from 0% to 50%, varying by region and generally highest (after North Africa) in the Horn of Africa and parts of the Sahel zone.

Bronze Age

The proposed Indo-European migration has variously been dated to the end of the Neolithic (Marija Gimbutas: Corded Ware culture, Yamna culture, Kurgan culture), the early Neolithic (Colin Renfrew: Starčevo-Körös, Linearbandkeramic) and the late Palaeolithic (Marcel Otte, Paleolithic continuity theory).

The speakers of the Proto-Indo-European language are usually believed to have originated to the North of the Black Sea (today Eastern Ukraine and Southern Russia), and from there they gradually migrated into, and spread their language by cultural diffusion to, Anatolia, Europe, and Central Asia Iran and South Asia starting from around the end of the Neolithic period (see Kurgan hypothesis). Other theories, such as that of Colin Renfrew, posit their development much earlier, in Anatolia, and claim that Indo-European languages and culture spread as a result of the agricultural revolution in the early Neolithic.

Relatively little is known about the inhabitants of pre-Indo-European "Old Europe". The Basque language remains from that era, as do the indigenous languages of the Caucasus. The Sami are genetically distinct among the peoples of Europe, but the Sami languages, as part of the Uralic languages, spread into Europe about the same time as the Indo-European languages. However, since that period speakers of other Uralic languages such as the Finns and the Estonians have had more contact with other Europeans, thus today sharing more genes with them than the Sami. Like other Western Uralic and Baltic Finnic peoples, the Finns originate from the Volga region in what is now Russia. Their ancestors migrated to Finland in the 8th century BC.

The earliest migrations we can reconstruct from historical sources are those of the 2nd millennium BC. The Proto-Indo-Iranians began their expansion from c. 2000 BC, the Rigveda documenting the presence of early Indo-Aryans in the Punjab from the late 2nd millennium BC, and Iranian tribes being attested in Assyrian sources as in the Iranian plateau from the 9th century BC. In the Late Bronze Age, the Aegean and Anatolia were overrun by moving populations, summarized as the "Sea Peoples", leading to the collapse of the Hittite Empire and ushering in the Iron Age.

A major archaeogenetics study uncovered a migration into southern Britain in the Bronze Age, during the 500-year period 1,300–800 BC. The newcomers were genetically most similar to ancient individuals from Gaul.

Austronesian expansion

The Austronesian expansion is a large-scale prehistoric seaborne migration of Austronesians from Taiwan into the Indo-Pacific using ancient sailing technologies; largely into previously uninhabited islands in Island Southeast Asia, Micronesia, Island Melanesia, Polynesia, and Madagascar. This started at around 3000 to 1500 BCE, though smaller migration waves continued up to historical times, ending at around AD 1200 with the settlement of Rapa Nui and New Zealand.

Austronesians first sailed southward and settled in northern Luzon, in the archipelago of the Philippines, intermingling with the earlier Australo-Melanesian population who had inhabited the islands since about 23,000 years earlier (through the Sundaland land bridge and short inter-island hops). Over the next thousand years, Austronesian peoples migrated southeast to the rest of the Philippines, and into the islands of the Celebes Sea and Borneo. From southwestern Borneo, Austronesians spread further west in a single migration event to both Sumatra and the coastal regions of southern Vietnam, becoming the ancestors of the speakers of the Malayic and Chamic branches of the Austronesian language family. A 2021 study, however, suggests an earlier divergence date between Cordilleran-related groups and populations from mainland East Asia and Taiwan at ~8,000 B.P., coinciding with the Cordilleran settlement of the Philippines.

Soon after reaching the Philippines, Austronesians colonized the Northern Mariana Islands by 1500 BCE or even earlier, becoming the first humans to reach Remote Oceania. Palau and Yap were settled by separate voyages by 1000 BCE.

Another important Austronesian migration branch was by the Lapita culture, which rapidly spread into the islands off the coast of northern New Guinea and into the Solomon Islands and other parts of coastal New Guinea and Island Melanesia by 1200 BCE. They reached the islands of Fiji, Samoa, and Tonga by around 900 to 800 BCE. This remained the furthest extent of the Austronesian expansion into Polynesia until around 700 CE, when there was another surge of island colonization. It reached the Cook Islands, Tahiti, and the Marquesas by 700 CE; Hawaii by 900 CE; Rapa Nui by 1000 CE; and New Zealand by 1200 CE. For a few centuries, the Polynesian islands were connected by bidirectional long-distance sailing, with the exception of Rapa Nui, which had limited further contact due to its isolated geographical location. Island groups like the Pitcairns, the Kermadec Islands, and the Norfolk Islands were also formerly settled by Austronesians but later abandoned. There is also putative evidence, based on the spread of the sweet potato, that Austronesians may have reached South America from Polynesia, where they might have traded with the Indigenous peoples of the Americas.

In the Indian Ocean, Austronesians in Maritime Southeast Asia established trade links with South Asia. They also established early long-distance contacts with Africa, possibly as early as before 500 BCE, based on archaeological evidence like banana phytoliths in Cameroon and Uganda and remains of Neolithic chicken bones in Zanzibar. By the end of the first millennium BCE, Austronesians were already sailing maritime trade routes linking the Han dynasty of China with the western Indian Ocean trade in India, the Roman Empire, and Africa. An Austronesian group, originally from the Makassar Strait region around Kalimantan and Sulawesi, eventually settled Madagascar, either directly from Southeast Asia or from preexisting mixed Austronesian-Bantu populations from East Africa. Estimates for when this occurred vary, from the 5th to 7th centuries CE. It is likely that the Austronesians that settled Madagascar followed a coastal route through South Asia and East Africa, rather than directly across the Indian Ocean. Genetic evidence suggests that some individuals of Austronesian descent reached Africa and the Arabian Peninsula.

Bantu expansion

The Bantu expansion is the major prehistoric migratory pattern that shaped the ethno-linguistic composition of Sub-Saharan Africa.

The Bantu, a branch of the Niger-Congo phylum, originated in West Africa around the Benue-Cross rivers area in southeastern Nigeria. Beginning in the 2nd millennium BC, they spread to Central Africa, and later, during the 1st millennium BC onward southeastern, spreading pastoralism and agriculture. During the 1st millennium AD, they populated Southern Africa. In the process, the Bantu languages displaced the Khoisan languages indigenous to Central and Southern Africa.

Arctic peoples

One of the last areas to be permanently settled by humans was the Arctic, reached by the Dorset culture about 4,500 years ago. The Inuit are the descendants of the Thule culture, which emerged from western Alaska around AD 1000 and gradually displaced the Dorset culture.

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