The regions of Yorubaland, Dahomey, the inter-lacustrine kingdoms and Zululand, which have so far been discussed, are examples of leading forces in the political development which was taking place in Africa right up to the eve of colonisation. They were not the only leading forces, and even where the states were territorially much smaller, there were observable advances in political organisation.
Areas of Africa that were most advanced by the 15th century generally maintained their standards, with few exceptions such as Kongo. In North Africa and Ethiopia, for example, feudal structures remained intact, though there was a noticeable lack of continued growth. In the Western Sudan, the Hausa states were heirs to the political and commercial tradition of the great empires after the fall of Songhai in the 17th century; and early in the 19th century there arose the Islamic Caliphate of Sokoto with its centre in Hausaland. The Sokoto empire was one of the largest political units ever established on the African continent, and it suffered from many internal schisms through lack of adequate mechanisms for integrating so vast a territory. Experiments to deal with the problem of unity were continued in the Western Sudan, with Islam as the hoped-for unifying factor. An Islamic theocratic state was established across the Niger bend by Ahmadu Ahmadu in the middle of the 19th century, while another was created by Al Haj Omar on the upper Niger. Most outstanding of all was the Mandinga state carved out under the leadership of Samori Toure by the 1880s. Samori Toure was not a scholar like the renowned Uthman dan Fodio and Al Haj Omar, who before him had been creators of Islamic states; but Samori Toure was a military genius and a political innovator, who went further than the others in setting up a political administration where a sense of loyalty could prevail over and above clans, localities and ethnic groups.
Zimbabwe, too, progressed, with only slight interference from Europeans. Locally, the centre of power shifted from Mutapa to Changamire; and eventually in the 19th century, Nguni groups (fleeing from the power of the Zulu) overran Zimbabwe. So long as the Nguni were warrior bands on the march, they obviously proved destructive; but by the middle of the 19th century the Nguni had already spread their own building techniques to Mozambique and to what is now Southern Rhodesia, and had joined with the local population to establish new and larger kingdoms — infused with a sense of nationality, as was the case in Zululand.
Meanwhile, across vast areas of Central Africa, striking political change was also taking place. Up to the 15th century, the level of social organisation was low in the area between Kongo and Zimbabwe. Precisely in that area, there arose the group of states known as the Luba-Lunda complex. Their political structures rather than their territorial size made them , significant; and their achievements were registered in the face of constantly encroaching slaving activities.
On the large island of Madagascar, the several small states of an earlier epoch had by the late 18th century given way to the powerful feudal Merina kingdom. More often than not, Madagascar is ignored in general assessments of the African continent, although (both in the physical and cultural sense) Africa is writ large on the Malagasy people. They, too, suffered from loss of population through slave exports; but the Merina kingdom did better than most slaving states, because more intensive cultivation of high-yielding swamp rice and the breeding of cattle offset the loss of labour. This situation should serve as a reminder that development accompanied by slave trading must not be superficially and illogically attributed to the export of the population and the dislocation attendant upon slave raiding. The bases of the political development of the Merina kingdom and of all others (whether or not engaged in slaving) lay in their own environment — in the material resources, human resources, technology and social relations. So long as any African society could at least maintain its inherited advantages springing from many centuries of evolutionary change, then for so long could the superstructure continue to expand and give further opportunities to whole groups of people, to classes and to individuals.
At the beginning of this section, attention was drawn to the necessity for reconciling a recognition of African development up to 1885 with an awareness of the losses simultaneously incurred by the continent in that epoch, due to the nature of the contact with capitalist Europe. That issue must also be explicitly alluded to at this point. It is clearly ridiculous to assert that contacts with Europe built or benefitted Africa in the pre-colonial period. Nor does it represent reality to suggest (as President Leopold Senghor once did) that the slave trade swept Africa like a bush fire, leaving nothing standing. The truth is that a developing Africa went into slave trading and European commercial relations as into a gale-force wind, which shipwrecked a few societies, set many others off course, and generally slowed down the rate of advance. However (pursuing the metaphor further) it must be noted that African captains were still making decisions before 1885, though already forces were at work which caused European capitalists to insist on, and succeed in taking over, command.