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,
Old Oyo National Park ancient political capital of Oyo Empire of the Yoruba people, and contains the ruins of this city. Oyo Ile was destroyed in the late 18th century by Ilorin and Hausa/Fulani warriors at the culmination of the rebellion of Afonja, commander of Oyo Empire's provincial army for which he allied himself with Hausa/Fulani Muslim jihadists. The national park originated in two earlier native administrative forest reserves, Upper Ogun established in 1936 and Oyo-lle established in 1941. These were converted to game reserves in 1952, then combined and upgraded to the present status of a national park. The park covers 2,512 km,