Middle Africa (1684–1827 CE): Slave Corridors, Shifting Kingdoms, and Early Colonial Footholds

Geographic & Environmental Context

The subregion of Middle Africa includes Chad, the Central African Republic, Cameroon, Equatorial Guinea, São Tomé and Príncipe, Gabon, the Republic of the Congo, the Democratic Republic of the Congo, and Angola.Anchors included the Congo River and its Kasai and Ubangi tributaries, the Gulf of Guinea islands, the Cameroon Highlands, the savanna–Sahel interface around Lake Chad, and the Angolan coastal ports of Luanda and Benguela. Riverine forests, estuaries, and caravan paths framed both inland subsistence and global trade corridors.

Climate & Environmental Shifts

The later Little Ice Age brought irregular rainfall. Drought pulses in the Sahel and Lake Chad zones pushed herders and farmers into floodplains, while forest belts remained wetter but suffered intensified dry-season variability. Along the Congo, high-flow years enriched floodplain farming but raised risks of erosion. On São Tomé and Príncipe, soils exhausted by earlier sugar monoculture shifted toward provisioning crops.

Subsistence & Settlement

Subsistence systems remained resilient and diversified: cassava (by now fully naturalized) became a famine reserve, supplementing plantain, yam, maize, taro, and oil palm. Fisheries, forest hunting, and wild gathering (kola, honey, fruits) enriched diets. Riverbank towns grew as markets; inland villages clustered around initiation lodges and kin compounds. Northward, Lake Chad and savanna basins supported millet, sorghum, and cattle. On São Tomé, Príncipe, and Bioko, enslaved Africans farmed provisions and cacao, while smaller settler groups sustained coastal trade.

Technology & Material Culture

Iron tools, hoes, and axes underpinned farming and forest clearing. Copper, ivory, and raffia textiles circulated as wealth. Firearms became more common inland, secured through coastal brokers in exchange for captives. Canoe craft remained central to Congo navigation, while horses supported northern savanna warfare. In court centers, elaborate wood and ivory carvings, brass regalia, and masks embodied spiritual and political power. Catholic missions left churches and crosses along coasts, yet local artisans adapted forms into African idioms.

Movement & Interaction Corridors

• Congo River system: The arterial link between forest polities and Atlantic coast, moving ivory, copper, raffia cloth, and captives.

• Angolan coast: Luanda and Benguela grew as hubs of the Atlantic slave trade, sending hundreds of thousands to Brazil.

• São Tomé and Príncipe: Declined as sugar producers but thrived as provisioning and transshipment points.

• Caravan and canoe routes: Extended from interior savannas (Lunda, Luba) toward coastal entrepôts.

• Lake Chad corridors: Connected Bornu and Hausa polities with Central African captives and ivory streams.

Cultural & Symbolic Expressions

The Kingdom of Kongo, weakened after Mbwila (1665), fractured into rival houses but retained Catholic rituals alongside ancestral shrines. In Angola, the legacy of Queen Njinga endured in Matamba’s royal cults, blending Catholic forms with nkisi practices. Inland, Luba and Lunda confederacies emerged, their kingship legitimized by sacred objects and oral epics. Across forest regions, initiation societies (mukanda, bwami) structured moral and social life. Coastal communities developed creolized Catholic festivals, while oral traditions narrated displacement and resistance under slaving pressure.

Technology & Power Shifts (Conflict Dynamics)

Firearms intensified warfare and slave raiding. The Imbangala bands of Angola institutionalized militarized raiding societies, feeding captives into coastal markets. Inland empires like Luba and Lunda expanded, taxing caravans and consolidating sacred kingship. In Kongo, civil wars fractured provinces into petty polities aligned with rival European allies. Coastal forts shifted hands: Portuguese consolidated Angola; Dutch influence receded; English, French, and Brazilian traders joined Portuguese in coastal factories.

Environmental Adaptation & Resilience

Cassava provided insurance against famine during drought or war disruption, as it thrived in poor soils and could be left unharvested until needed. Communities diversified plots with yams, maize, and legumes. Floodplain agriculture exploited annual silt renewal. Fishing and smoking technologies created portable surpluses. Kinship networks dispersed households, providing fallback shelters. Ritual societies imposed taboos on over-hunting, sustaining forest resilience.

Transition

By 1827 CE, Middle Africa was deeply embedded in the Atlantic economy. Angola was the single largest source of enslaved Africans to Brazil; the Kongo kingdom was fragmented, though its Catholic–African synthesis endured; Luba and Lunda empires rose inland as regional powers. São Tomé and Príncipe functioned as slave entrepôts and provisioning hubs. Despite violence, inland communities adapted through cassava-based farming and ritual solidarity. Yet the slaving vortex was hollowing societies, even as it forged new polities and cultural fusions that would shape the region’s colonial and postcolonial futures.

The expansionist Lunda will establish a number of subsidiary states, including an eastern branch known as the Kazembe Kingdom of the Luapula Valley in the mid-eighteenth century.

This kingdom will successfully control the ivory trade in the area and set up a tributary organization of subordinate chiefs.

The origins of the Congo's savanna kingdoms are shrouded in myths, but their capacity to expand and conquer is directly related to their internal political structure.

Thus, the expansion of the Lunda Kingdom, which probably begins in the late sixteenth century and results in the so-called Lunda Empire that flourishes in the seventeenth and eighteenth centuries, is critically related to what historian Jan Vansina calls "the twin mechanisms of perpetual succession and positional kinship." (Jan Vansina, Kingdoms of the Savanna, Madison, 1968; and Jan Vansina, Paths in the Rainforests: Toward a History of Political Tradition in Equatorial Africa, Madison, 1990. )

That is, each succeeding officeholder, monarch or otherwise, assumes the name, title, and personal identity of the original occupant (founder) of the office (perpetual succession).

At the same time, the new officeholder adopts all kin relationships of the founder of the office as his own (positional kinship).

In this manner, the personalized identity and kin ties of each founding official are perpetuated over time.

These mechanisms are extremely useful in that they divorce the political structure from the actual descent structure.

In so doing, they free the processes of political recruitment from the constraints of kinship and facilitate the recruitment of new officials from within Lunda society and from the ranks of recently conquered peoples.

By the same token, the Lunda govern through a hierarchy of subordinate chiefs, a form of indirect rule, in newly occupied lands, a practice that facilitates the adaptation of the political kingdom beyond its original homeland.

This custom shows how the Lunda Kingdom differs in some fundamental ways from the Luba kingdoms (fifteenth to nineteenth centuries) from which it had split off, probably in the fifteenth century.

Although both evolve out of preexisting chiefdoms and share many of the same political symbols, including the notion of divine kingship, only the Lunda are able to expand substantially beyond their core area.

During the seventeenth century, the Lunda expand toward the west and northwest into present-day Angola, initially to escape Luba domination, and to the south and east, initially in search of copper and salt and control of the trade associated with these desirable commodities, and later in pursuit of ivory.

The absence among the Luba of anything like positional succession or perpetual kinship has proved a major handicap.

The rise and fall of at least three different Luba dynasties in the seventeenth century testifies to the relative weakness of the Luba monarchy.

Competition for control of the throne has led to incessant civil wars, and by the late nineteenth century, the kingdom has become easy prey for the Chokwe (often spelled Cokwe) people.

Chokwe political structure is similar to that of the Lunda, under whose chiefs they had originally lived.

This structure enables the Chokwe to absorb people organized into small lineages over a wide area and to gain military superiority over the indigenous population of the lands into which they moved.

Once they conquer a people, the Chokwe rapidly assimilate them into their own social structure.

The reason for their expansion seems to have been the rich trade in wax, ivory, slaves and, later, rubber; the avenues of Chokwe expansion have followed the lines of preexisting trade routes.

New sets of players appear on the African scene by the late 1800s, the Arabs in the east and the Europeans in the west, both deeply involved in slave-trading activities.

The tactical alliance between the Luba king, Kasongo Kalombo, who ascended to the Luba throne in the 1860s, and Arab traders did little to prevent the disintegration of his kingdom.

As elsewhere through the savannas, externally inspired local revolts had accelerated the process of fragmentation instigated by competition for the monarchy, causing outlying provinces to break away and set themselves up as more or less independent political entities.

The Kongo monarchy has been a major pawn in international struggles from the inception of Portuguese penetration into the old Kongo Kingdom in the late fifteenth century and well into the beginning of the scramble for colonies in the nineteenth century,

These conflicts had pitted the Vatican against the Portuguese crown for control of African souls, the Dutch (who began arriving on the west coast of Africa in the seventeenth century) against the Portuguese for control of the slave trade, and ultimately Spain against Portugal for sovereignty over the Portuguese Empire.

The Kongo Kingdom had been the first state on the west coast of Central Africa to come into contact with Europeans.

Portuguese sailors under Diogo Cão had landed at the mouth of the Congo River in 1483.

Cão had traveled from Portugal to Kongo and back several times during the 1480s, bringing missionaries to the Kongo court and taking Kongo nobles to Portugal in 1485.

In the 1490s, the king of Kongo had asked Portugal for missionaries and technical assistance in exchange for ivory and other desirable items, such as slaves and copperwares—a relationship, ultimately detrimental to the Kongo, which has continued for centuries.

Competition over the slave trade has repercussions far beyond the boundaries of Kongo society.

Slave-trading activities create powerful vested interests among both Africans and foreigners—the Portuguese and later the Dutch, French, British, and Arabs.

A new source of instability has thus  been introduced into the coastal areas of Central Africa and its hinterland, which greatly hastens the decline of the kingdoms.

Nowhere is this more evident than in the history of the Kongo Kingdom, which is a centralized state system ruled by an absolute monarch.

A group of Kongo in the late fourteenth century, led by the son of a chief from the area of present-day Boma, had moved south of the Congo River into northern Angola, conquered the territory, and established Mbanza Kongo Dia Ntotila (Great City of the King) as the capital of their kingdom (the capital was later moved to São Salvador).

By the middle of the fifteenth century, the Kongo king ruled the lands in northern Angola and the north bank of the Congo.

By the early sixteenth century, the kingdom was divided into six provinces, each under a subchief or governor, who also held a religious title and authority.

The last really effective years of the Kongo monarchy were from 1641 to 1661, although the kingdom endured into the next century.

By the eighteenth century, however, most of the kingdom's provinces (Mbamba, Mbata, Mpemba, and Soyo) had become self-governing principalities.

The king, though claiming a divine right to the monarchy, has little authority beyond his capital, and internal bickerings thaturrounded his throne and further diminish his power also contribute to the weakening of the provincial chiefdoms.

Commercial activities are directly linked to the dynamics of the Kongo Kingdom's internal fragmentation.

Just as the ownership of slaves has become a major source of wealth and prestige, both in turn have made it possible for the slave owners to challenge the authority of the king.

Here, as elsewhere in the savannas, the competition for slaves has introduced a major source of instability, creating a permanent state of social unrest and civil war.

The history of the old Kongo Kingdom encapsulates many of the crises experienced by several other states of the savannas in their efforts to cope with the challenge of the new economic forces.