This article surveys the latest archaeological research and dating results for West Africa. For the Iron Age, recent fieldwork has been spread widely: especially noteworthy is that bearing on the history of ancient Ghana and Mali. Work on the Late Stone Age appears by contrast to have been rather patchy lately, although various palaeoecological researches continue to improve our understanding of the changing environments affecting West African populations over the last 10,000 years. In south-central Niger, moreover, remains of copper-smelting by a stone-using community are dated to around 2000 B.C. From the same region, as also from northern Ghana, comes further evidence for the inception of the Iron Age during the first millennium b.c.

The article is prefaced by some critical comments on the citing and interpretation of radiocarbon datings in historical discussions, and on the meaning of ‘corrected’ and ‘calendar dates’.

The Sēfuwa dynasty seized power in Kānem around 1075, but it was only in the beginning of the thirteenth century that the rulers of Kānem were able to extend their authority over Bornū. Prior to this move small groups of Saharan speakers had already established themselves among the Chadic speakers of the Komadugu Yobe valley. Towards the end of the reign of Dūnama Dībalāmi (c. 1210–48) the court of the Sēfuwa itself was shifted to Bornū, mainly as a result of disturbances in Kānem. Indeed, according to oral traditions of the sixteenth century, the Tubu, in alliance with certain members of the Sēfuwa aristocracy, staged a major rebellion against the central government, apparently attempting to resist the strict application of Islamic principles of government by Dūnama Dībalāmi. Towards the end of the thirteenth century powerful rulers were again able to establish the authority of the Sēfuwa on firm grounds: in the east, even on the fringes of Kānem, they brought the situation under strict control and in the west they extended – or confirmed – the political influence of the Sēfuwa dynasty over the focal points of interregional trade which began to rise in Hausaland. Thus Bornū became the central province of the Sēfuwa Empire in spite of the fact that several kings continued to reside temporarily in the old capital of Djīmī situated in Kānem. This major shift of their territorial basis affected the position of the Sēfuwa in their original homelands. Written sources from the end of the fourteenth century show that the increasing involvement of the Sēfuwa in Bornū and its western border states must have changed their attitude towards the people living east of Lake Chad: after having acquired the character of an autochthonous (or national) dynasty of Kānem – in spite of their foreign origin – the Sēfuwa progressively became an alien power in this major Sudanic state, even though the people of Kānem and Bornū were closely related. Furthermore, the rise of a powerful kingdom in the area of Lake Fitrī under the rule of the Bulāla became a serious threat to the Sēfuwa in their original homelands as the warrior aristocracy of the Bulāla state – which must have been of Kanembu origin – remained closely connected with the sedentary population of Kānem. When finally during the reign of 'Umar b. Idrīs (c. 1382–7), the Sēfuwa were forced by the Bulāla to withdraw their forces from Kānem, this territorial loss did not affect the future development of the Empire to the extent that has formerly been supposed, since losses in the east were largely compensated by earlier gains in the west.

In late medieval and early modern times West Africa was one of the principal suppliers of gold to the world bullion market. In this context the Matter of Bitu is one of much importance. Bitu lay on the frontiers of the Malian world and was one of its most flourishing gold marts. So much is clear from sixteenth- and seventeenth-century writings, both African and European. A review of this body of evidence indicates that the gold trade at Bitu was controlled by the Wangara, who played a central role in organizing trade between the Akan goldfields and the towns of the Western Sudan. It is shown that Bitu cannot be other than Bighu (Begho, Bew, etc.), the abandoned Wangara town lying on the northwestern fringes of the Akan forest country, which is known (from excavation) to have flourished in the relevant period. In the late fifteenth century the Portuguese established posts on the southern shores of the Akan country, so challenging the monopolistic position which the Wangara had hitherto enjoyed in the gold trade. The Portuguese sent envoys to Mali, presumably to negotiate trade agreements. The bid was apparently unsuccessful. The struggle for the Akan trade in the sixteenth century between Portuguese and Malian interests will be treated in the second part of this paper.

The mechanics of food production by peasant cultivators have received relatively little attention from historians of colonial Africa, and yet a knowledge of food production systems and the labour they require is crucial to any understanding of rural change and stratification in the colonial period. On the Shire Highlands of Southern Malawi, ecological disturbance and the alienation of land in the early years of the twentieth century meant that an intensification of labour on food production was needed if hunger was to be avoided. The differential success of various groups in holding on to their family labour was a major factor making for economic differentiation in this period. Full-scale famine was avoided by the ability of some groups to adopt new cropping patterns, intensify labour, and thus continue to produce a food surplus. A degree of land shortage could be accommodated as long as labour could be intensified on the available land. In the Upper Shire valley at the same time, there was little shortage of land, but the concern for food security there was important in determining the outcome of the introduction of cotton as a cash-crop. The attainment of food security in this area, which was prone to drought, involved the deployment of family labour on food production over much of the year, including the planting of second crops and back-up crops in the dry season. The introduction of cotton was largely a failure because the returns did not compensate for the loss of labour on food production.

This paper traces the process of the decline of African middlemen in Eastern Nigeria from wealthy entrepreneurs of the late nineteenth century to petty traders after 1930. Four phases are identified in their decline. During the first phase, 1900–5, the middlemen lost only the political control of their trading areas but benefited commercially. The establishment of colonial rule expanded their market. And with the reluctance of expatriate firms to move into the interior, the continued ignorance of the natives of the actual prices of their produce and of imported goods, and the encouragement from the colonial administrators, African middlemen prospered.

These advantages were lost during the second phase, 1905–16. As the firms began to move inland from 1905, they traded with the natives and fostered a new group of smaller and dependent middlemen. The middlemen's market began to contract and their wealth declined. Their fortunes worsened during the third phase, 1916–30. With the opening of the Eastern Railway to traffic in 1916 and the increased construction of roads during this period, the firms intensified their penetration of the interior, swallowing up what remained of the middlemen's market. The introduction of produce inspection in Eastern Nigeria in 1928 added more hardships for the middlemen, putting many out of business. And by 1930 the trust system, upon which most middlemen depended after 1916 for raising their trading capital, collapsed, leaving most of them impoverished.

Thus, after 1930 African middlemen were no more than petty traders, trading with little capital and making marginal profit. They became incapable of challenging the expatriate firms in the import–export trade as their predecessors had done in the nineteenth century. The firms employed various trade malpractices to ensure that the African traders retained this status until the 1940s.

Based on interviews with participants and witnesses, together with some documentation, the article describes the means and conditions by which Kimbanguist doctrines were introduced to Kisangani (Stanleyville) between 1945 and 1959, before the foundation of the Church of Christ on the Earth by the Prophet Simon Kimbangu as a national and international church. The special place in the covert theology of the Church of certain events in 1952, at the camp for Kimbanguist exiles in Lowa, is described. Discussion of ethnic rivalries during and after the foundation of the Church is related to the content of the oral traditions, which represent several political tendencies. The conclusion is that Kimbanguism in Upper Zaire differs from that of its place of origin in Lower Zaire in lacking roots in local culture and politics, and in having been primarily a product of nationalist sentiment after World War II.

This essay treats the effects of acculturation on oral historical materials. Rather than addressing it as a matter of ‘contamination’, that is, as a question of extraneous data entering and distorting ‘pristine’ traditions, it is considered here to be a facet of the larger question of cultural assimilation – a case of the old and familiar constantly confronting and responding to the new and strange. Seen in this way, oral data continuously adopt and adapt whatever new, relevant and interesting materials come their way in not very different – though decidedly less visible – ways from those that written data have always done. This argument is illustrated by examples from various times and places, largely situations where missionaries, newly literate members, or colonial officials, perceptibly influenced the historical views of societies on their way to becoming literate.

In fact this phenomenon seems widespread enough to justify advancing a model that can be tested against specific cases. For our purposes, this model begins with the first meeting of oral and literate cultures, although we can fairly assume that an infinity of similar but unrecorded meetings of oral cultures also resulted in change. After this initial impetus, the constraints of colonial rule, the exigencies of independence, and the aims of modern academic oral historiography each contributed in some measure to this process of ongoing change. As a result, historians, whether primarily interested in the reliability of oral data, or in the process and effects of changes in them, must look to a wider range of sources than has been customary.