Luhya kingdom of western Kenya, the most centralized state in the region at colonization.
Political sovereignty was progressively dismantled by the British colonial administration from the 1890s onward; Nabongo Mumia was forced to retire from authority by the British in 1926 and his headquarters converted into a colonial post. The kingdom was never formally abolished but survives only as a ceremonial institution — the only kingdom in Kenya.
Western Kenya and the wider region through the colonial encounter (broad context, not Wanga-specific).
East Africa from 1800 (broad regional context).