Tonga (Batonga)

Population: ≈ 1.5–2 million across southern Zambia and northwestern Zimbabwe

Location: The middle Zambezi valley and the southern plateau — the Gwembe valley (now Lake Kariba's shores) and the plateau around Choma and Binga

Language: Chitonga (Zambezi Tonga)

Language family: Niger-Congo → Bantu (M60)

Traditional governance: Historically stateless and decentralised — no chiefs before the colonial era, but rain-shrine priests (the sikatongo and the basangu spirit-mediums) and clan elders holding ritual and social authority; colonial rule imposed chiefs; today Zambian and Zimbabwean local government with strong clan and shrine traditions.

Clothing: Historic skin and bark dress with beadwork; the distinctive gourd and reed ornaments and, famously, the women's traditional pipe-smoking; today cloth (chitenge) and Western dress; dance regalia of bells, skins and feathers.

Food: Sorghum, millet and maize porridge (nsima) with fish from the Zambezi and now Lake Kariba, greens, groundnuts and beans; cattle on the plateau (fewer in the tsetse valley); sorghum beer for ritual and work-parties; the river and the gardens the twin sources of life.

Ceremonies: The budima and ngoma buntibe — great communal dance-orchestras of side-blown antelope-horn trumpets and drums, each player one note, performed at funerals and gatherings; rain rites at the basangu shrines; the lwiindi harvest and rain ceremonies; funerary and initiation rites.

Marriage customs: Bridewealth (cattle on the plateau, goods and labour in the valley); matrilineal elements in descent and inheritance among many Tonga; clan exogamy; the dance and beer-gatherings as social and courtship occasions.

Initiation rites: Girls' initiation (with instruction and seclusion) and boys' passage through work and community roles; the dance-orchestras a school of the community's music and cooperation; spirit-mediums and rain-priests trained by calling and apprenticeship.

The everyday practices a visitor meets first — how people greet, pray, eat and host. Forms vary by family, region and generation, and many coexist with Islam and Christianity rather than being replaced by them.

“One horn is a bleat; the buntibe is a song.”

The individual matters only within the cooperating whole.

“The river gives and the river takes; honour it either way.”

Respect for the Zambezi's power — and its god.

“Uproot the tree, and still the roots remember the soil.”

Displacement cannot erase belonging and memory.

Creation: Leza, the supreme God (a name shared across the region), created and sends the rain; the basangu — communal spirits speaking through mediums — govern rain and the land's welfare; Nyaminyami and river-spirits inhabit the Zambezi; the ancestors (mizimu) act in family fortune.

Beliefs: Leza above; the basangu rain-spirits and their mediums central to communal welfare; Nyaminyami and water-spirits of the river; mizimu ancestors honoured at homestead and grave; Christianity now widespread over the rain-shrine and ancestral religion.

Ancestors: The mizimu are honoured and the basangu speak for the community's rain and welfare; the drowned graves of the valley became a symbol of ancestral loss; ritual maintains right relation with river, rain and the dead.

Traditional settlements: Homesteads of round thatched houses and granaries — historically along the Zambezi's fertile banks, now resettled on the plateau and Kariba's shores; cattle enclosures on the plateau; the fishing villages of the lake; the basangu rain-shrines as ritual sites.

Building techniques: Pole-and-mud round houses with thatch; raised granaries; fishing craft and gear for river and lake; the resettlement forcing new building on less generous land.

Village layout: Homesteads by clan along river, then lake and plateau; cattle and gardens around; rain-shrines and dance-grounds as communal foci; the lost valley remembered beneath Kariba's waters.

1. c. 1000–1700

   Tonga-speaking peoples settle the middle Zambezi valley and southern plateau — decentralised farmers and fishers with rain-shrine religion.

2. 18th–19th c.

   Stateless Tonga communities on the river and plateau; raided by Ndebele, Lozi and Kololo neighbours; rain-shrines and the basangu central to survival.

3. 1890s–1930s

   British South Africa Company and colonial rule; chiefs imposed on a chiefless people; the plateau Tonga become a major maize-farming region.

4. 1955–1958

   Kariba Dam built; the Gwembe valley drowned; ~57,000 Tonga forcibly resettled — one of Africa's great forced displacements, studied for generations.

5. Present

   The Tonga rebuild on lake and plateau; Nyaminyami and the buntibe orchestras endure as emblems; the resettlement's grievances and the culture's resilience remain central to Tonga identity.