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,
Yoruba Academy will be maintained by the Academy to set a standard for the Yoruba language. South-West Yoruba in Nigeria: Ekiti State, Lagos State, Ogun State, Oyo State, Osun State, Ondo State, parts of Kwara State, Kogi State, Edo State, Delta State and Niger State Diaspora Yoruba outside Nigeria in Africa: in Togo, Benin, Sierra Leone and parts of Ghana Diaspora Yoruba outside Africa: in Haiti, Cuba, Puerto Rico, Brazil, United States, UK, [(Ireland)] Yoruba Academy The Yoruba Academy is a multi-disciplinary institution that brings together scholars, politicians, businessemen and experts in Yoruba language, culture, economics, law, science and technology, and governance.