Iron production was a particularly important precolonial African technology, with iron becoming a central component of socioeconomic life in many societies across the continent. Iron-bearing ores are much more abundant in the earth’s crust than those of copper, and in Africa, iron was recovered from these ores using the bloomery process, until the importation of European iron in the later second millennium eventually undermined local production. Although smelting was most intensively focused in regions where all the necessary components of a smelt were plentiful—iron ore, ceramic, fuel, and water—frequent occurrences of small-scale, local iron production mean that iron slag and associated remains are common finds on archaeological sites across Africa.
The archaeological remains found on iron production and iron-working sites can provide detailed information about the past processes that were undertaken at these sites, as well as the people involved with the technologies both as practitioners and consumers. A variety of analytical approaches are commonly used by archaeometallurgists to learn more about past iron technologies, particularly those methods that explore the chemistry and mineralogy of archaeological samples. By interpreting the results of these analyses in conjunction with ethnographic, historical, and experimental data, it is possible to reconstruct the techniques and ingredients that past smelters and smiths employed in their crafts, and address important questions concerning the organization of production, the acquisition of raw materials, innovations and changes in technological approach, and the environmental and social changes that accompanied these technologies.
Analysis of ceramics in archaeological contexts has provided a range of information regarding African history. Archaeologists have approached ceramics as a craft as well as an indicator of identity and status. The Africanist focus on the technological development of ceramic manufacture and production has taken several forms. The most notable are (1) the origins of ceramic production, (2) the spread and independent invention of this technology and regional styles through typological analysis, and (3) technological change related to the identity of the producers and consumers including changing dietary practices over time. The various arguments put forth for the first production and use of ceramics in different regions of the continent are connected to the exploitation of available resources such as fish as well as the rise of agricultural production. Following the appearance and technical history of ceramics in various regions of the continent, a focus on foodways and regional cuisine has placed ceramics at the forefront of interpretation.
Promoted by necessity, scarcity, and/or abundance, trade is one of the most essential cultural behaviors that promoted contact and exchange of ideas, commodities, and services between individuals and communities and variously transformed African societies of different regions and time periods. Anthropological, historical (including historical linguistics), and archaeological evidence points to the existence, on the one hand, of intra-African trade and, on the other, of external trade between Africa and those outside the continent. Traditionally, however, trade and exchange involving perishable and organic commodities such as grain and cattle have until now been very difficult to identify due to a lack of well-resolved documentation techniques. By comparison, that some objects such as metal artifacts, glass beads, ceramics, and porcelain are pyrotechnological products, with a high survival rate that makes their trade and exchange easily visible archaeologically. Given the well-known regional differences across the continent, it is essential to combine multiple sources and techniques, in a multipronged way, to provide a dynamic picture of the mechanics of precolonial African trade and exchange of various time periods and geographies.
Analogical arguments are central to and pervasive within archaeological discourse. Within these arguments, ethnographic analogies are often seen as being particularly problematic exercises in essentialism, which unthinkingly cast reified ethnographic schema back in time and thus perpetuate ideas about primitive indigenes, awaiting colonial contact to emerge from ahistorical primordial obscurity. The shadow of 19th-century social evolutionism, in which forager communities (not participating in agriculture and leading nomadic lifestyles) were represented as particularly primitive, has cast a pall of suspicion over ethnographic analogical models—especially as forager communities continue to feature prominently in such models to this day.
Archaeologists use ethnographic analogies in a variety of ways; these analogies are heuristic constructs tailored to research questions and to the stubbornness of particular suites of archaeological data. Such uses include inducing imaginative and revelatory modes of thinking about past societies, outside of the archaeologist’s usual experiences, as well as a suite of formal and relational analogies that seek to combine ethnographic data with data drawn from the physical sciences to help constrain archaeological interpretation.
Direct historical approaches utilize a collection of ethnographic and historical sources to construct analogies based on a relation of similarity between the communities of people involved; these frameworks, perhaps, carry the greatest danger of unwittingly casting modern populations as “contemporary primitives.” By emphasizing that source-side ethnographic datasets are heuristic tools rather than reflections of some sociocultural reality, such fears may (at least in part) be ameliorated. Saliently, archaeological data must operate as epistemologically equivalent to ethnographic data in order to resist the tendency to cast back a rich, textured ethnographic case study wholesale into the murky waters of prehistory. Only when this status is afforded archaeological data can is it possible to reveal the ways in which past conditions diverged from ethnographic ones.
Paul Lane and Anna Shoemaker
Agricultural practices on the African continent are exceptionally diverse and have deep histories spanning at least eight millennia. Over time, farmers and herders have independently domesticated different food crops and a more limited range of animals, and have effectively modified numerous ecological niches to better suit their needs. They have also adopted “exotic” species from other parts of the globe, nurturing these to produce new cross-breeds and varieties better adapted to African conditions. Evidence for the origins of these different approaches to food production and their subsequent entanglement is attested by diverse sources. These include archaeological remains, bio- and geo-archaeological signatures, genetic data, historical linguistics, and processes of landscape domestication.
David K. Wright
Understanding paleoclimates has been an important component of archaeological research for over a century. Human settlement, mobility, and subsistence activities are predicated on interactions with the natural world, and by reconstructing the broader environmental context, archaeologists can recognize the primary external catalyst of cultural change. Modern paleoenvironmental reconstruction methods employ techniques developed over the last century as well as those that are at the frontiers of scientific inquiry. Archaeologists intent on providing basic environmental context must first describe the sedimentology of surficial deposits in order to understand landform evolution. Furthermore, descriptions of soils, which form in stable, weathered sedimentary deposits, are critical indicators of past climate. Soils are first described in excavation test units using macro-scale classification schemes, but increasingly microscopic techniques such as soil micromorphology in thin sections and DNA sequences of endemic microbiota are being used. Various types of plant and animal communities hosted in archaeological deposits also provide critical environmental details as they are often temperature and precipitation dependent. Generally speaking, the simpler and smaller the organism is, the more restricted its habitat tends to be. Therefore, microfauna and floral remains often provide the greatest level of precision in environmental reconstruction. Finally, light stable isotopes of carbon, oxygen, and nitrogen can be assayed from a wide variety of organic matter, and they provide specific information about biotic communities and precipitation that are useful to understand paleoenvironments. The simultaneous integration of multiple lines of evidence is being performed in archaeological research projects across the African continent and provides the best means to fully comprehend the framework in which human biological and cultural evolution occurred.
While there are a handful of defined methods for working with primary historical sources in archaeology, few archaeologists take these as their main points of departure or rely upon them too rigidly. This is to do both with the highly variable nature of the historical and archaeological material available for certain African contexts, and also with how archaeologists conceive of the relationship between these two bodies of evidence: as antagonistic, supplementary, entangled and subjective, mutually creative, and so on. Some methodologies focus on the potentials for consonance and dissonance between written and material sources. Others utilize oral traditions to provide insights into chronology, memory, historical and political dynamics, and the material aspects of these. Still other approaches focus on how historical and archaeological sources offer complementary perspectives on the local and the global, events and processes, and other shifts in scale. While these methods are diverse and contingent, they are united insofar as archaeologists take their cues from objects and from preoccupations with time and space. Archaeologists see their work concerning primary historical sources not as filling in gaps in written records but as addressing the partialities of the records themselves by engaging with an array of complex questions about meaning, authority, and materiality