In the pre-colonial era of African culture, both in respect of those tribes that cultivated and those that were nomadic in character or even the Nguni tribes that pursued a militaristic form of life and culture, all regarded land as God given and a common good. Usage determined title and could be usurped at any time by force of arms or tribal consensus. Life was insecure, short and pretty torrid.
Because these widely spread communities were basically using the land until it was exhausted or grazing was finished, they seldom built permanent accommodation - nomads living in tents and the cultivators living in huts that could be simply abandoned when it became necessary to move on. Once abandoned, the land recovered in its own time. A similar situation existed in pre-colonial America and in Australia.
So long as the population remained very small in relation to the vast areas occupied this was a stable and reasonable life that was reflected in the culture and norms of the people. It was also environmentally sustainable.
Then comes the colonial era which introduced colonial forms of title rights for settler interests, the restriction of people to prescribed land areas and the erection of fences to limit access and establish control. At the same time, tribal conflicts were halted, life expectancies raised and in the absence of conflict and the control of disease, African populations began to grow at a rate not seen for centuries. In Zimbabwe the population was expanding at over 3,5 per cent per annum by the 50's and remained at this very high level until Independence in 1980.
This created pressure on land resources, but so long as there were adequate stocks of vacant state controlled land, that could be allocated and settled to accommodate the growing population, the need for security for migrant workers and their families and to make provision for the exhaustion of land now being occupied on a permanent basis this was satisfied by simply bringing more land into play. In the 60's I was involved in just such an exercise when the Rhodesian government opened up the Zhombe/Gokwe area (some 10 million acres of land) for tribal or communal occupation.
This was the situation in almost all Colonial States in Africa and once the colonial regime had been overthrown or withdrawn, the new African governments, one after the other, chose to revert to different forms of tribal and communal systems of land use. In some countries like Kenya, the transition was reasonably managed, in others it was done by the simple abolition of colonial title rights.