History of Africa usually governed by an "oba" and an "iwarefa", a council of chiefs who advised the "oba." by the 18th century, the Yoruba city-states formed a loose confederation, with the "Oni" of Ife as the head and Ife as the capital. As time went on, the individual city-states became more powerful with their "obas" assuming more powerful spiritual positions and diluting the authority of the "Oni" of Ife. Rivalry became intense among the city-states. The Oyo Empire rose in the 16th century. The Oyo state had been conquered in 1550 by the kingdom of Nupe, which was in possession of cavalry,
Egba people Egba people The Egba people are a subgroup of the Yoruba people, an ethnic group of western Nigeria, majorly from the central part of Ogun State that is Ogun central senatorial district. Ogun Central Senitorial district comprises six local government in Ogun state which includes Abeokuta North, Abeokuta South, Ewekoro, Ifo, Obafemi Owode and Odeda Local governments. The Egba group originally under the Oyo Empire became independent following the spectacular collapse of Oyo in the first half of the 19th century. Wars with the Dahomey, in which the Egbas were successful partly due to the protection afforded by the Olumo