Neolithic
The Neolithic period, also known as the New Stone Age, represents a transformative era in human prehistory marked by the transition from nomadic hunter-gatherer societies to settled agricultural communities, beginning around 12,000 years ago (circa 10,000 BCE) in the Near East and independently in other regions worldwide.[1][2] This shift, often termed the Neolithic Revolution, fundamentally altered human economies, social structures, and technologies, enabling population growth and the development of complex societies.[3] The period generally spanned until approximately 4,500–3,000 BCE in many areas, giving way to the Chalcolithic or Bronze Age as metallurgy emerged.[1] Key innovations of the Neolithic included the domestication of plants and animals, which provided reliable food sources and surplus production.[2] In the Fertile Crescent of southwest Asia, early domestications around 11,500–10,000 years ago involved wild cereals like wheat and barley, alongside legumes such as peas and lentils, while animals like sheep, goats, cattle, and pigs were selectively bred for traits suited to human needs.[3] Similar processes occurred independently in regions like the Yellow and Yangtze River valleys of China (millet and rice, starting around 9,000–8,000 BCE), Mesoamerica (maize, beans, and squash by 7,000 BCE), and sub-Saharan Africa (sorghum and yams, around 5,000–3,000 BCE).[1][4] These advancements were supported by the use of polished stone tools, groundstone implements for processing grains, and the invention of pottery for storage and cooking, which facilitated a more sedentary lifestyle.[2] The establishment of permanent villages was a hallmark of Neolithic societies, with early examples including Jericho in the Jordan Valley (dating to 9,600–8,300 BCE), Çatalhöyük in modern-day Turkey (7,200–6,000 BCE), and Göbekli Tepe (circa 9,500 BCE), which featured monumental architecture predating full agriculture.[1][3] These settlements, often housing hundreds to thousands of people, reflected increased social organization, trade networks (e.g., for obsidian tools), and symbolic practices, including art and ritual structures that hinted at emerging beliefs.[1] Regionally, the Neolithic unfolded asynchronously: in Europe, it spread from Anatolia via farming dispersals around 7,000 BCE, while in the Americas and East Asia, it emphasized different crops and timelines suited to local environments.[2] This era laid the groundwork for subsequent civilizations by fostering surplus economies, specialization of labor, and cultural complexity.[3]Overview and Definition
Chronology and Terminology
The Neolithic period represents the final subdivision of the Stone Age within the three-age system of prehistory, characterized primarily by the emergence of agriculture, pottery production, and permanent settlements, spanning approximately 10,000 to 2,000 BCE on a global scale, though with significant regional variations in timing and duration.[5] This era marks a pivotal transition from predominantly mobile hunter-gatherer lifestyles to more sedentary agrarian societies, enabling population growth and social complexity.[3] The three-age system, which structures prehistoric chronology into the Stone, Bronze, and Iron Ages based on predominant tool materials, was first formalized by Danish antiquarian Christian Jürgensen Thomsen in 1836 while curating artifacts for the National Museum of Denmark.[6] Within the Stone Age, further subdivisions include the Paleolithic (Old Stone Age), focused on early stone tools and foraging; the Mesolithic (Middle Stone Age), a transitional phase with microliths and intensified hunting; and the Neolithic (New Stone Age), defined by ground stone tools, domestication, and ceramic technologies.[7] The Neolithic's onset is often framed as the "Neolithic Revolution," a term coined by archaeologist V. Gordon Childe in his 1936 work Man Makes Himself, to describe the profound economic and social upheavals driven by food production innovations.[8] Key terminologies within the Neolithic include the Pre-Pottery Neolithic (PPN), divided into PPNA (Pre-Pottery Neolithic A, c. 10,000–8,800 BCE) and PPNB (Pre-Pottery Neolithic B, c. 8,800–6,500 BCE), phases distinguished by the absence of ceramics but presence of early architecture and plant domestication in Southwest Asia. These precede the Pottery Neolithic, when vessel production became widespread, signaling further technological maturation.[9] Chronological frameworks vary regionally due to independent or diffused adoptions of Neolithic traits: in the Near East, it spans roughly 9,500–4,500 BCE; in Europe, from about 7,000 BCE in the southeast to 1,700 BCE in the north; and in the Americas, emerging around 3,000 BCE in select areas.[10] Some classifications employ a tripartite division into Early, Middle, and Late Neolithic based on ceramic styles, settlement expansion, or metal introductions, though this is not universally applied and depends on local archaeological sequences.[11]Significance and Characteristics
The Neolithic era marked a pivotal transition characterized by sedentism, where human communities shifted from nomadic foraging to establishing permanent settlements, enabled by the domestication of plants and animals around 11,500 years ago under stabilizing post-glacial climates. This fundamental change facilitated the production of food surpluses, which supported sustained population growth and allowed for labor specialization beyond immediate subsistence needs, such as crafting and ritual activities.[12][13] The Neolithic Revolution represented a profound societal transformation from hunter-gatherer economies to agriculture-based systems, fundamentally altering human organization by enabling the formation of complex societies with emergent trade networks, property concepts, and social hierarchies, including inequalities tied to resource control. This shift not only increased economic productivity but also fostered innovations in social structures that laid the groundwork for later urban civilizations.[14][15] Environmentally, the era coincided with adaptations to post-Ice Age warming around 10,000 BCE following the Younger Dryas, which provided favorable conditions for cultivation but also introduced challenges like deforestation from clearing land for farming and the development of early soil management techniques to maintain fertility amid expanding agriculture. These human activities began altering landscapes on a scale previously unseen, contributing to long-term ecological shifts such as reduced woodland cover in settled regions.[16] Demographically, the period saw explosive population growth, rising from an estimated 5 million people globally at its onset to approximately 50 million by its conclusion, driven by higher birth rates and reduced mobility, as indicated by increased settlement densities and archaeological evidence of larger communities.[17] Culturally, this era witnessed the emergence of villages as central hubs, alongside ritual sites and symbolic practices, including structured burial rites that reflected growing beliefs in the afterlife and social cohesion.[18][19][20]Origins and Early Developments
Initial Transition in Southwest Asia
The initial transition to the Neolithic in Southwest Asia occurred during the Pre-Pottery Neolithic A (PPNA), spanning approximately 10,000–8500 BCE, as communities shifted from the late Epipaleolithic Natufian culture toward more sedentary lifestyles and early plant management. The Natufian period (ca. 12,500–9600 BCE) provided key precursors, with evidence of semi-sedentary settlements, intensive wild cereal harvesting using sickles, and groundstone tools for processing, laying the groundwork for Neolithic innovations in the Fertile Crescent.[21] Early sedentism is evident at sites like Jericho in the Jordan Valley, where PPNA layers reveal settlements covering up to 2.5 hectares, including round houses and a monumental stone wall estimated to require significant communal labor, suggesting organized social structures.[21] Similarly, Göbekli Tepe in southeastern Turkey features large oval enclosures with T-shaped limestone pillars up to 5 meters high, often decorated with animal reliefs such as foxes and snakes, dated to ca. 9600–8500 BCE and interpreted as ritual or communal centers built by hunter-gatherers during the early Neolithic shift.[22] In 2025, the discovery of the Masiyun site in Saudi Arabia revealed a PPNA settlement dating to 11,000–10,300 years ago, extending the early Neolithic presence southward.[23] The subsequent Pre-Pottery Neolithic B (PPNB), from about 8500–7000 BCE, marked a broader adoption of farming and architectural advancements across the region. Widespread cultivation of cereals like emmer wheat and barley transitioned from wild harvesting to domestication, with morphological changes such as non-shattering rachises appearing around 8700–8200 BCE at sites like Tell Aswad in the Early PPNB, supported by systematic planting on alluvial soils. Animal herding emerged, particularly of goats and sheep, with early management signatures including age-specific culling and corralling evident by around 8500 BCE in the Zagros region, expanding to the Levant during PPNB to form mixed agropastoral economies. Settlements grew larger and more structured, featuring rectangular or sub-rectangular houses with lime-plaster floors, as seen at 'Ain Ghazal in Jordan (ca. 7250 BCE), where communities reached up to 50,000 m².[24] Çatalhöyük in central Anatolia exemplifies this phase, with densely packed mud-brick houses, plastered interiors, and evidence of domesticated cereals and herd animals integrated into daily life from ca. 7400 BCE. By the Pottery Neolithic period (ca. 7000–5000 BCE), ceramic technologies were introduced, facilitating storage and cooking of farmed produce, with early fired clay vessels appearing at sites like Boncuklu Höyük in Anatolia around 8300 BCE.[25] This phase saw expansion into southern Mesopotamia, where pottery-bearing settlements like Tell Hassuna in Iraq adopted these innovations, likely through cultural diffusion from northern regions, enabling denser populations and further agricultural intensification.[25] Monumental architecture, such as the T-shaped pillars at Göbekli Tepe, underscores early symbolic complexity, potentially linking ritual practices to emerging social hierarchies during the PPNA-PPNB continuum.[22] Recent excavations and analyses up to 2025 confirm local population continuity from Epipaleolithic Natufian groups to Neolithic farmers in the Fertile Crescent, with ancient DNA from Mesopotamian sites showing that Pre-Pottery Neolithic populations derived primarily from local Epipaleolithic ancestry admixed with minor regional inputs, without major external migrations until the Pottery Neolithic.[26] For instance, genomes from Çayönü in Upper Mesopotamia (ca. 8500–7500 BCE) reveal stable mixtures of Anatolian, Levantine, and Zagros ancestries over centuries, supporting in situ development of Neolithic traits from Natufian forebears.[27]Factors Driving the Revolution
The transition to Neolithic lifestyles was profoundly influenced by climatic shifts at the end of the Pleistocene epoch. The Younger Dryas, a period of abrupt cooling from approximately 12,900 to 11,700 years ago, concluded around 9600 BCE, ushering in the warmer and more stable Holocene epoch.[28] This warming facilitated the expansion of wild plant distributions, particularly in regions like the Fertile Crescent, where increased temperatures and precipitation supported denser vegetation and opened migration corridors for humans and animals, setting the stage for intensified resource exploitation.[29] Cognitive and behavioral advancements in late Paleolithic societies also played a pivotal role in driving the Neolithic Revolution. Groups during the Epipaleolithic period, such as the Natufians in the Levant, exhibited heightened planning through the construction of semi-permanent settlements and the use of storage facilities for gathered resources, indicating a shift toward resource management and foresight beyond immediate foraging needs.[30] Concurrently, ritual complexity emerged, evidenced by elaborate burial practices and symbolic artifacts, which fostered social cohesion and cultural transmission essential for the cooperative labor required in early experimentation with plant cultivation.[30] These developments reflect an evolving cognitive framework that enabled populations to adapt to environmental variability by prioritizing long-term strategies over opportunistic hunting and gathering.[31] Population pressure emerged as a key hypothesis explaining the intensification of resource use leading to domestication. During the late Pleistocene, especially in refugia like the Levant amid Younger Dryas stresses, growing human densities depleted local wild resources, compelling groups to adopt more intensive foraging techniques and experiment with resource enhancement.[32] This pressure, exacerbated by climatic instability, is posited to have accelerated the shift from broad-spectrum foraging to targeted management of high-yield species, as populations sought to sustain expanding numbers in constrained environments.[32] V. Gordon Childe's Oasis Theory provides a foundational explanation for post-Ice Age domestication dynamics. Proposed in the 1920s and refined in subsequent works, the theory argues that retreating glaciers and increasing aridity around 10,000 BCE forced human and animal populations to cluster near reliable water sources, such as oases or river valleys, promoting symbiotic relationships that inadvertently led to the taming and selective breeding of species.[33] In these concentrated settings, reduced mobility and heightened interaction between humans and fauna facilitated the gradual domestication of animals and protection of wild plants, marking a critical step toward sedentary agricultural communities.[33] Recent genetic studies from the 2020s underscore the biological adaptations that supported Neolithic dietary shifts. Analyses of ancient DNA reveal that early farmers in Europe and the Near East rapidly evolved lactase persistence alleles, enabling adult digestion of milk from domesticated animals, with selection pressures evident by around 5000 BCE in pastoralist groups.[34] Similarly, copy number variations in the AMY1 gene, which encodes salivary amylase for starch breakdown, increased significantly in farming populations over the past 12,000 years, enhancing the efficiency of digesting carbohydrate-rich crops like wheat and barley and providing a selective advantage in staple-dependent diets.[35] These adaptations highlight how genetic changes intertwined with cultural innovations to sustain the nutritional demands of emerging agricultural societies.[35]Regional Variations
Southwest Asia and Near East
The Late Neolithic period in Southwest Asia, spanning approximately 6000–4500 BCE, witnessed significant expansions of settled communities across the Fertile Crescent, with the Ubaid culture emerging as a pivotal development in southern Mesopotamia around 6500 BCE and extending northward by the mid-6th millennium BCE.[36] This phase marked a transition toward greater social complexity, characterized by settlement hierarchies and communal architecture that foreshadowed urbanization, such as the multi-tiered platforms at Susa in western Iran and temple sequences at Eridu in southern Mesopotamia.[37] Ubaid influences spread through peaceful diffusion, incorporating local traditions and fostering economic integration over a vast area from the Persian Gulf to southeast Anatolia.[36] Trade networks during this era connected Ubaid communities to Anatolia, facilitating the exchange of obsidian from Cappadocia and other materials, which supported craft specialization and long-distance interactions as early as the 6th millennium BCE.[38] These networks extended supra-regionally, linking southern Mesopotamian polities with peripheral areas through asymmetrical exchanges that enhanced socioeconomic differentiation and laid groundwork for later urban centers like Uruk.[37] Regional variations distinguished Levantine traditions, which emphasized rain-fed agriculture and shared ceramic motifs with earlier Pre-Pottery Neolithic phases, from Mesopotamian ones focused on irrigation and stratified societies.[39] In northern Mesopotamia, the Hassuna-Samarra ceramic traditions (ca. 6000–4800 BCE) exemplified these differences, with Hassuna featuring coarse painted wares in small villages suited to dry farming, while Samarra introduced finer geometric designs on buff pottery alongside T-shaped ritual buildings indicating emerging social hierarchies.[39] Prominent sites illustrate these developments, including 'Ain Ghazal in the Jordan Valley, where lime-plaster statues dating to around 6500 BCE—constructed over reed armatures and depicting human figures up to 1 meter tall—suggest ritual or communal significance, possibly as ancestral representations displayed in public spaces.[40] At Tell Halula on the Middle Euphrates, carbon isotope analysis of seeds from the 10th millennium BCE reveals elevated water inputs (over 110 mm for wheat), at least five times modern rainfall, pointing to early water management practices like alluvial planting or rudimentary irrigation that supported sustained agriculture.[41] The diffusion of Neolithic practices to neighboring regions occurred through a combination of demic migration—evidenced by genetic and archaeobotanical continuity from Levantine founder crops—and cultural exchange via trade routes that carried ideas, technologies, and materials across the Fertile Crescent by the 7th–6th millennia BCE.[42] Recent post-2020 archaeological surveys in the Persian Gulf, including underwater reconnaissance in the Sharjah Emirate, have identified submerged coastal landscapes potentially preserving Neolithic adaptations, such as maritime resource exploitation and early seafaring networks linking the Gulf to Mesopotamia around 7000–5000 BCE.[43] These findings underscore the role of now-flooded lowlands as hubs for human mobility and economic innovation during environmental shifts.[44]Europe
The Neolithic period in Europe began around 6200 BCE in the southeastern Balkans with the Starčevo culture, characterized by early farming settlements and pottery production that marked the transition from foraging economies.[45] This culture, centered in present-day Serbia and Romania, featured dispersed villages with pit-houses and evidence of domesticated plants and animals introduced from adjacent regions. By approximately 6000 BCE, Neolithic practices spread northward through the Balkans, reaching central Europe around 5500 BCE with the emergence of the Linear Pottery Culture (LBK) in the Danube River valley and surrounding areas of modern-day Hungary, Austria, and Germany.[46] The LBK is noted for its longhouse settlements, linear-decorated ceramics, and agricultural expansion into loess soils, representing a rapid dissemination of farming that covered vast territories within a few centuries.[47] Genetic and archaeological evidence indicates that the spread of Neolithic culture in Europe primarily involved migrations of Anatolian farmers traveling via the Danube corridor, where they encountered and admixed with local Western Hunter-Gatherer populations. Ancient DNA analyses reveal that early European farmers carried substantial ancestry from Anatolian Neolithic groups, with admixture rates varying from 10-30% local hunter-gatherer DNA in LBK individuals, facilitating cultural and genetic hybridization.[48] This demic diffusion model contrasts with purely cultural transmission hypotheses, as isotopic and genomic data from LBK burials show mobility patterns consistent with population movements from the southeast. In the Mediterranean, the Cardial Ware culture emerged around 6000 BCE along coastal regions from Spain to the Adriatic, distinguished by impressed pottery shells and maritime-oriented settlements that adapted Near Eastern domesticated crops like emmer wheat and barley to local environments. Further west, along the Atlantic facade, megalithic tomb construction began circa 4500 BCE, with monumental structures like passage graves in Ireland and Brittany serving as communal ritual centers that emphasized collective ancestry and landscape integration.[49] Key Neolithic sites illustrate these regional adaptations, such as Sesklo in Thessaly, Greece, dating to 6500-5500 BCE, where multi-room houses and painted pottery reflect early sedentary life and symbolic art.[50] In northern Europe, Skara Brae on Orkney, Scotland, occupied from 3100-2500 BCE, preserves a clustered village of stone longhouses with integrated storage and drainage, evidencing communal living and possible ritual feasting areas marked by hearths and grooved ware ceramics. LBK longhouses in central Europe, often 20-40 meters long, housed extended families and symbolized social organization, while megalithic sites like those in the Atlantic region incorporated communal rituals inferred from aligned burials and astronomical orientations.[51] The Late Neolithic in Europe, around 2500 BCE, saw the rise of the Bell Beaker culture, which spanned from Iberia to the Rhine, characterized by distinctive inverted-bell pottery, archery equipment, and single burials indicating increased social stratification and mobility. This phenomenon signals precursors to metallurgy, with early copper ornaments and alloys appearing in graves, alongside evidence of long-distance trade networks that connected diverse regions.[52]Africa
In northeastern Africa, the Neolithic period began around 6000 BCE in the Nile Valley with the Faiyum A culture, where communities transitioned to sedentary farming influenced by Near Eastern agricultural practices, including the cultivation of emmer wheat and barley, alongside local exploitation of wild resources.[53] This culture featured semi-permanent settlements with storage pits for grains and evidence of early animal husbandry, such as domesticated sheep and goats, marking a key adaptation to the Nile's floodplains despite ongoing desertification.[54] Local domestication efforts included sorghum (Sorghum bicolor), with archaeobotanical remains from nearby sites like Nabta Playa indicating human-mediated selection of wild varieties by the late sixth millennium BCE, though full domestication occurred later in the fourth millennium BCE in eastern Sudan.[55] These developments highlight a blend of imported technologies and indigenous plant management suited to the region's semi-arid ecology. In northwestern Africa, the Capsian tradition, evolving into a Neolithic phase around 6000 BCE, supported the emergence of pastoralism in the Maghreb through the introduction of domesticated sheep and goats, likely via interactions with Levantine populations.[56] This shift is evident in sites across Algeria and Tunisia, where hunter-gatherer economies incorporated herding, microlithic tools, and early ceramics, fostering mobile pastoral communities adapted to Mediterranean and Saharan fringes.[57] Rock art at Tassili n'Ajjer in southern Algeria vividly documents this era, with pastoral scenes depicting cattle herding, dairy activities, and ritual dances from approximately 6000 to 4000 BCE, reflecting a cultural emphasis on livestock amid a greener Sahara.[58] Sub-Saharan Africa's Neolithic developments started later, around 3000 BCE, in the Sahel zone, where pearl millet (Pennisetum glaucum) was domesticated independently as a drought-resistant staple, with earliest evidence from pottery impressions at sites like Dhar Tichitt in Mauritania dating to 2500–1900 BCE.[59] At Dhar Tichitt, agropastoral villages featured stone-walled enclosures and millet cultivation integrated with cattle herding, representing early complex societies in the region.[60] Oil palm (Elaeis guineensis) also played a role in West African Neolithic economies, with managed groves providing oil and nuts from around 3000 BCE in forested zones like central Ghana, supporting arboriculture alongside shifting cultivation.[61] Distinctive features of African Neolithic societies included cattle cults, where livestock symbolized wealth and ritual significance, as seen in Saharan rock art and Egyptian predynastic burials emphasizing cattle sacrifices and iconography from the sixth millennium BCE.[62] Early trans-Saharan networks facilitated exchange of obsidian, shells, and livestock between North and sub-Saharan groups by the fourth millennium BCE, promoting cultural diffusion without large-scale urbanization.[63] In tropical zones, resistance to full sedentism persisted due to environmental challenges like tsetse fly infestation and soil leaching, favoring mobile pastoralism and agro-pastoral hybrids over intensive farming.[64] Recent ancient DNA analyses from the 2020s reveal back-migrations from Eurasia into North Africa during the Neolithic, introducing farmer-related ancestry that admixed with local forager populations, as evidenced in genomes from Moroccan and Algerian sites dating to 7000–5000 BCE.[65] This gene flow, peaking around 5500 BCE in the Maghreb, contributed to genetic diversity and likely aided the spread of pastoral technologies, with sub-Saharan admixture remaining minimal until later periods.[66]East and South Asia
In East Asia, the Neolithic period began around 8000 BCE along the Yangtze River, where the Pengtoushan culture provides evidence of early rice cultivation, marking one of the independent centers of domestication in the region.[67] Archaeobotanical remains from Pengtoushan sites indicate that domesticated Oryza sativa was integrated into subsistence strategies, alongside wild resources, in a wet-rice farming system adapted to the riverine environment.[68] Concurrently, in the Yellow River basin, the Peiligang culture, dating to approximately 9000–7000 cal BP, focused on millet domestication, with Setaria italica and Panicum miliaceum as primary crops, supported by charred seed evidence from settlements.[69] These parallel developments highlight the region's diverse agricultural adaptations, with rice in the south and millet in the north forming the basis for later expansions. In South Asia, Neolithic practices emerged around 7000 BCE at Mehrgarh in present-day Pakistan, where wheat and barley were cultivated, likely introduced from Southwest Asian sources, while local domestication of zebu cattle (Bos indicus) occurred independently.[70] Zooarchaeological analysis at Mehrgarh confirms zebu as the dominant livestock, with morphological traits distinguishing it from taurine cattle, underscoring a hybrid agro-pastoral economy blending western crops with indigenous animal management.[71] This site represents an early bridge between Near Eastern influences and South Asian innovations, with multi-crop systems including pulses emerging by the mid-Neolithic. Distinct phases characterize the Neolithic across East and South Asia, including the Jomon period in Japan from approximately 14,000 to 300 BCE, which featured semi-sedentary foraging communities reliant on hunting, gathering, and fishing, yet renowned for some of the world's earliest pottery production.[72] Jomon pottery, often cord-impressed and used for storage and cooking, supported a mobile yet village-based lifestyle without full agriculture.[73] In China, the Longshan culture around 3000 BCE marked a transition to proto-urbanism, with walled settlements like Taosi and Pingliangtai exhibiting planned layouts, rammed-earth walls, and evidence of social complexity through elite burials and craft specialization.[74] Key sites further illustrate these developments, such as Hemudu in China's Yangtze Delta (circa 5000–3300 BCE), where lacquer ware artifacts, including a red-painted wooden bowl dated to about 7000 years ago, demonstrate advanced woodworking and preservative techniques integrated with rice-based economies.[75] In South Asia, the Burzahom site in Kashmir (circa 3000–1000 BCE) reveals pit dwellings—subterranean structures up to 6 meters deep, accessed by steps and lined with wood—used by aceramic Neolithic communities for year-round habitation amid foraging and early herding.[76] These features, including postholes and hearths within pits, indicate adaptive architecture to the region's cold climate. Neolithic interactions between East and South Asia involved precursors to overland trade networks, akin to early Silk Road routes, facilitating the exchange of crops, pottery styles, and technologies from the Yellow River to the Indus by the late third millennium BCE.[77] Additionally, Austroasiatic migrations from southern China into Southeast Asia around 4000–3000 BCE carried rice farming practices, contributing to genetic and linguistic links across the region.[78] These movements underscore the interconnectedness of Asian Neolithic sequences, blending local innovations with diffused elements.The Americas
The Neolithic in the Americas developed independently from Old World processes, beginning later due to the timing of human migration across Beringia around 15,000–20,000 years ago. In Mesoamerica, early plant management emerged during the Archaic period, with domestication of squash (Cucurbita pepo) around 10,000 years ago (approximately 8000 BCE) in regions like Oaxaca, based on archaeobotanical remains indicating morphological changes from wild to cultivated forms.[79] Maize (Zea mays) precursors followed, with genetic and archaeological evidence placing initial domestication in the Balsas River valley of southwestern Mexico at about 9000 calendar years before present (cal BP, or roughly 7000 BCE), where teosinte was selectively bred for larger kernels and reduced glumes.[80] This transition marked a shift from foraging to horticulture, with sites showing managed fields rather than intensive plowing. In the Andean region, Neolithic developments centered on highland adaptations, with potatoes (Solanum tuberosum) domesticated around 7000 years ago (5000 BCE) and quinoa (Chenopodium quinoa) cultivated by approximately 5000 BCE, as evidenced by macroremains and phytoliths from early sites.[81] Key evidence comes from Guitarrero Cave in Peru's Callejón de Huaylas, where accelerator mass spectrometry dates on artifacts and plant remains confirm occupation and cultivation of beans, squash, and other tubers from the eighth millennium BCE (around 8000–7000 BCE), representing an early phase of the Archaic period leading into the Formative around 3000 BCE.[82] These phases involved gradual intensification, transitioning from seasonal camps to more permanent settlements focused on tuber and pseudocereal crops suited to diverse altitudes. Regional variations highlight the Americas' ecological diversity, with Amazonian groups domesticating manioc (Manihot esculenta) around 10,350 years ago (8350 BCE) in southwestern Amazonia, as phytolith analysis from forest islands in Bolivia's Llanos de Moxos reveals early garden cultivation alongside squash by 10,250 years ago (8250 BCE).[83] In the Southwestern United States, maize adoption occurred around 2100 BCE, spreading via cultural diffusion from Mesoamerica, with radiocarbon-dated cobs from sites like McEuen Cave confirming its integration into local foraging economies by that time.[84] Unlike Old World patterns, American Neolithic traits emphasized horticulture—intensive plant management without widespread animal domestication or plowing—over full-scale agriculture, and pottery appeared late, with the earliest examples in the northern Peruvian highlands dating to around 2500 BCE, while Amazonian ceramics emerged earlier at about 6000–5000 BCE.[85] Recent archaeobotanical and genomic studies from the 2020s have confirmed multiple centers of maize domestication and early dispersal, challenging a single-origin model; for instance, ancient DNA from Central American rockshelters shows divergent lineages by 4000 BCE, and 2024 findings of partially domesticated cobs in Brazilian caves indicate independent selection in South America around 5000–3000 BCE.[80] These developments supported emerging sedentary villages, such as those in the Tehuacán Valley, where horticultural surpluses enabled year-round habitation by the late Archaic.[80]Oceania and Australia
In Australia, the Neolithic period is not characterized by the adoption of agriculture or significant technological shifts seen elsewhere, with Indigenous populations maintaining a foraging-based lifestyle supported by microlithic tools until European contact in the late 18th century.[86][87] Microlithic technologies, including small stone tools hafted onto spears and other implements, persisted as a continuation from Paleolithic traditions without the emergence of polished stone axes or ceramic production.[88] Evidence from rock shelters, such as Madjedbebe in northern Australia, reveals continuous use of grinding stones for processing seeds, ochre, and other materials dating back over 65,000 years, indicating long-term reliance on wild plant resources rather than domestication.[89] Early environmental management practices, including fire-stick farming—systematic low-intensity burning to promote grassland regrowth and attract game—likely began around 40,000 years ago, enhancing foraging efficiency without transitioning to full cultivation.[90] In contrast, parts of Oceania witnessed Neolithic-like developments through the independent emergence of agriculture in Near Oceania and the later Austronesian expansion. At Kuk Swamp in the highlands of Papua New Guinea, archaeological evidence shows wetland drainage and mounding for cultivating taro, bananas, and sugarcane starting around 7000 BCE, with initial plant exploitation possibly extending to 10,000 BCE, marking one of the world's earliest agricultural systems outside Southwest Asia.[91] The Lapita culture, emerging around 1500 BCE in Near Oceania (including the Bismarck Archipelago), introduced dentate-stamped pottery, horticulture focused on root crops like taro and yams, and outrigger canoes that facilitated rapid Austronesian migrations into Remote Oceania, such as Fiji and Tonga, by 1200 BCE.[92][93] These developments faced unique constraints due to island biogeography, including limited arable land, soil nutrient depletion from volcanic origins, and high dependence on marine resources like fish and shellfish, which supplemented rather than replaced horticulture in many island societies.[94][95] Recent isotopic analyses of human remains from Lapita and post-Lapita sites in Melanesia indicate gradual dietary shifts toward greater reliance on cultivated plants, with carbon and nitrogen ratios showing increased C3 crop consumption (e.g., taro) over marine proteins between 1500 BCE and 1000 BCE, highlighting the adaptive integration of farming in resource-scarce environments.Technological Innovations
Agriculture and Domestication
The Neolithic period marked a pivotal shift toward agriculture through the domestication of plants and animals, transforming human societies from mobile hunter-gatherers to sedentary communities reliant on cultivated resources. This process involved selective management of wild species, leading to genetic modifications that enhanced yield, edibility, and utility, primarily occurring between approximately 10,000 and 4,000 BCE across multiple global regions. Domestication was not instantaneous but a gradual coevolutionary interaction between humans and species, driven by pre-domestication cultivation and harvesting practices that favored desirable traits over generations.[96][97] Plant domestication began with cereals and pulses in the Near East, where emmer wheat (Triticum dicoccum) and barley (Hordeum vulgare) were among the earliest founder crops, cultivated from wild progenitors around 10,000 BCE in the Fertile Crescent. Key genetic changes included the evolution of non-shattering rachises in cereals, preventing seed dispersal and facilitating human harvesting, a trait under strong selection pressure after approximately 10,000 years ago. In East Asia, rice (Oryza sativa) domestication occurred in the Yangtze River basin around 9,000–8,000 BCE, involving similar adaptations like reduced shattering and larger grains from wild Oryza rufipogon. In the Americas, maize (Zea mays) emerged from teosinte (Zea mays ssp. parviglumis) in southern Mexico by about 9,000 years ago, with genetic shifts such as increased kernel row number and glume reduction making it more palatable and productive. These transformations were evidenced by archaeobotanical remains showing morphological distinctions from wild forms.[98][99][100][101] Nikolai Vavilov identified eight primary centers of plant origin based on patterns of genetic diversity, proposing that domestication hotspots concentrated related crops in specific regions. These centers include:- Chinese Center: Rice, soybean, millet, peach.
- Indian Center (including Indo-Malayan): Rice, mung bean, cotton, sugarcane, banana.
- Central Asian Center: Wheat, apple, walnut.
- Near Eastern Center: Emmer wheat, barley, lentil, chickpea.
- Mediterranean Center: Olive, grape, fig.
- Ethiopian Center: Sorghum, teff, coffee.
- Central American Center: Maize, squash, common bean.
- South American Center (Andean): Potato, quinoa, lima bean.