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,
Kisi, Oyo Kisi, Oyo Kisi (or Kishi) is a large town in Oyo State, Nigeria. It is the headquarters of the Irepo Local Government Area. Kisi is located at the northern part of Oyo state and is the headquarters of Irepo local government. Kisi is an extension of old Oyo-Ile which was collapsed in the 18th century as a result of Jihad activity by the Hausa/Fulani of Ilorin, Kwara state. Kisi is about 250km from Ibadan, the capital city of Oyo state, and about 150km from Oyo Alafin. The town has an official post office. Historically, different tribes such as the Baruba,