The history of human habitation in the Andean region of South America stretches from circa 15,000 BCE to the present day. Stretching for 7,000 km (4,300 mi) long, the region encompasses mountainous, tropical and desert environments. This colonisation and habitation of the region has been affected by its unique geography and climate, leading to the development of unique cultural and societal organisations.
After the first humans — who were then arranged into hunter-gatherer tribal groups — arrived in South America via the Isthmus of Panama, they spread out across the continent, with the earliest evidence for settlement in the Andean region dating to circa 15,000 BCE, in what archaeologists call the Lithic Period. In the ensuing Andean preceramic period, plants began to be widely cultivated, and first complex society, Caral-Supe civilization, emerged at 3500 BC, and lasted until 1800 BC. Also, distinct religious centres emerged, such as the Kotosh Religious Tradition in the highlands.
This was followed by the Ceramic Period. Various complex societies developed at this time, such as Chavín culture, lasting from 900 BC to 200 BC, Paracas culture, lasting from 800 BC to 200 BC, its successor Nazca culture, lasting from 200 BC to 800, the Moche civilisation, lasting from 100 to 700, Wari and Tiwanaku Empires, with both lasting from 600 to 1000, and Chimor, lasting from 900 to 1470. In later periods, much of the Andean region was conquered by the indigenous Incas, who in 1438 founded the largest empire that the Americas had ever seen, named Tahuantinsuyu, but usually called Inca Empire. The Inca governed their empire from the capital city of Cuzco, administering it along traditional Andean lines. Inca Empire rose from Kingdom of Cuzco, founded around 1230.
In the 16th century, Spanish colonisers from Europe arrived in the Andes, eventually subjugating the indigenous kingdoms and incorporating the Andean region into the Spanish Empire. In the 19th century, a rising tide of anti-imperialist nationalism that was sweeping all of South America led rebel armies to overthrow Spanish rule. The Andean region was subsequently divided into a number of new states, Peru, Chile, Bolivia and Ecuador. The 20th century saw the growing influence of the United States in the region, which was increasingly exploited for its natural gas supplies. This in turn led to the rise of a number of anti-imperialist and socialist movements to oppose U.S. and multinational involvement in Andean South America.
Lithic Period: c.15,000 BCE—3500 BCE
The earliest period in which humans inhabited the Andean region was the Lithic period, sometimes alternately called the Early Archaic period. It was a period characterised by the use of stone tools, or lithics, as the main form of technology, and a hunter-gatherer mode of existence.
First colonisation
After the evolution of anatomically modern humans in East Africa circa 200,000 years ago, the species spread across the African continent and into Europe and Asia. It was from the Bering land bridge between Siberia in Northeast Asia and Alaska in north-western North America that humans first crossed into the Americas. From there, vanguards of human groups headed south, colonising the rest of the continent before reaching the Isthmus of Panama and crossing into the continent of South America.Moseley 2001. p. 87.Burger 1992. pp. 08-11. Although there had been four biologically distinct genetic human populations in North America, as has been identified by DNA analysis, only one of these populations, that known as the Paleo-Indians, pushed as far south as Mesoamerica and South America, meaning that the indigenous inhabitants of that latter continent were genetically homogenous.Moseley 2001. pp. 87-88.
Comparative analysis of indigenous religious beliefs across South America have led academics to suspect that the first Paleo-Indian colonists of the continent would have believed in a multi-layered universe in which the Earth was suspended between a celestial outer sphere and a cavernous inner sphere. There would have been strong taboos against incest, something that would have prevented inbreeding (a particular problem amongst the genetic homogeneity of the Indigenous South Americans), and instead marriage was controlled by social conventions, such as the development of moiety systems of societal duality.Moseley 2001. p. 88.
The first pioneers in South America, migrating down south from the Isthmus of Panama, would likely have avoided the largely mountainous Andean region, because the upper Cordillera was glaciated, cold and sparsely vegetated, making life there difficult, whilst these early populations would have suffered from hypoxia. Instead, the early hunter-gatherer pioneers would have most likely stuck to the margins of the continent, where they could exploit the resources in the rivers, deltas and salt-water lagoons. Gradually, generation by generation, as the population grew, these Indigenous Americans spread out throughout the continent, with some groups eventually reaching the Andean region. They would have most likely initially inhabited the coastal lowland areas, only travelling up into the mountains to obtain resources like obsidian. Gradually, as their descendants became acclimatised to the altitude, groups of humans began to move up and inhabit higher points of the Andes.Moseley 2001. pp. 88-89.
One of the earliest known Andean sites that have been properly investigated by archaeologists is that at Monte Verde in Southern Chile, which has been radiocarbon dated to 14,800 years ago. At this site, there was evidence for seasonal settlement along the sandy banks of a creek in the subarctic pine forests of the low southern Cordillera, at which were found preserved wooden and stone tools, remnants of wild vegetables such as potatoes, and the skeletal remains of five or six mastodons which had been scavenged or hunted by the human occupants.Moseley 2001. pp. 89-90. Other Lithic period sites that have been discovered in the Andean region include Los Toldos (Santa Cruz) in Argentina, and San Vicente de Tagua Tagua, Cueva Fell (Fell's Cave), and Quero in contemporary Chile. Pikimachay, the cave of Jaywamachay (40 km southwest of Ayacucho), Huarago and Uschumachay in contemporary Peru are also important. From the evidence unearthed at all these sites it is apparent that at this time, the horse was the most commonly hunted species, although the sloth and guanaco were also apparent.Moseley 2001. p. 91.
Lithic adaptation
Due to the varied geographical areas in the Andean region, unique communities evolved to suit their own particular locations across the region in the latter part of the Lithic period. Archaeologists have defined these different communities by their unique types of stone tool designs, describing them as the Northwestern tradition, the coastal Paijan tradition, the Central Andean Lithic Tradition, and the Atacama Maritime Tradition.Moseley 2001. p. 92.
It was also in this period that Andean communities first began to domesticate crops, genetically transforming various plant species from their wild counterparts.Moseley 2001. pp. 102-103.
Pre-Ceramic Period: c.3500 BCE—c.2000 BCE
Overview The Lithic Period was followed by what archaeologists have called the Pre-Ceramic Period, or alternatively the Late Archaic Period, and is characterised by increasing societal complexity, rising population levels and the construction of monumental ceremonial centres across the Andean region.Moseley 2001. p. 107. It is the latter of these features that remains the most visually obvious characteristic of the Pre-Ceramic amongst archaeologists, and indicates that by this time, Andean society was sufficiently developed that it could organise large building projects involving the management of labor.Burger 1992. p. 27. The Pre-Ceramic Period also saw a rise in the population of the Andean region, with the possibility that many people were partially migratory, spending much of their year in rural areas but moving to the monumental ceremonial centers for certain times which were seen as having special significance.Moseley 2001. p. 114. The Pre-Ceramic also saw changes in the climate of the Andean region, for the culmination of the Ice Age had led to an end of the glacial meltback which had been occurring throughout the Lithic Period, and as a result the sea levels on the west coast of South America stabilized.Moseley 2001. p. 107.
Despite these changes, many elements of Andean society remained the same as it had been in earlier millennia; for instance, as its name suggests, the Pre-Ceramic was also a period when Andean society had yet to develop ceramic technology, and therefore had no pottery to use for cooking or storage.Burger 1992. p. 27. Similarly, Andean communities in the Pre-Ceramic had not developed agriculture or domesticated flora or fauna, instead gaining most of their food from what they could hunt or gather from the wild, just as their Lithic Period predecessors had done, although there is evidence that some wild plants had begun to be intentionally cultivated.Moseley 2001. p. 107.
Some of the earliest cultivated plants in South America have been found in the Guitarrero Cave.
Caral-Supe civilization
Caral-Supe civilization was the first civilization in pre-Columbian America, located in modern-day Peru, as well as one of world's oldest civilizations. It coalesced in 3500 BC, and large construction became apparent from 3100 BC. It lasted until 1800 BC. Among the largest cities were Caral and Aspero, the type site of civilization.
Ceramic Period: c.2000 BCE—1533 Overview The development of ceramic technology in the Andean region, and the subsequent production of pottery for both cooking and storage, marks the beginning of Ceramic Period.Burger 1992. p. 57. The introduction of pottery was however "simply one part of a much larger socioeconomic transformation" along the Andean coast, as communities ceased seeing their coastal settlements as the major centers of activity in favour of more inland locations, and as such the former maritime-based economy was replaced by one that was dominated by irrigation farming.Burger 1992. p. 57.
Initial Period Kotosh Religious Tradition
In the mountain drainage areas of the Andes, a series of ceremonial buildings were constructed that archaeologists have identified as being a part of what they called the Kotosh Religious Tradition.Moseley 2001. p. 109. One of the most prominent of these sites was that at Kotosh, after which the religious tradition was named. Located on the bank of the Río Higueras, Kotosh was at an elevation of c. 2000 metres above sea level, and consisted of "two large platform mounds flanked by lesser constructions and a number of small structures on a nearby river terrace."Moseley 2001. p. 109. Another notable example of the Kotosh Religious Tradition can be seen at La Galgada in the Callejón de Huaylas, modern Peru, which again consists of two platform mounds and several surrounding structures.Moseley 2001. p. 109.
In other parts of the Andean region, other traditions of ceremonial monument building also developed during the Pre-Ceramic period.
Powerful earthquake in Chile