History of Nigeria city-states. A state council (the "Oyo Mesi") named the "Alaafin" (king) and acted as a check on his authority. Their capital city was situated about 100 km north of present-day Oyo. Unlike the forest-bound Yoruba kingdoms, Oyo was in the savanna and drew its military strength from its cavalry forces, which established hegemony over the adjacent Nupe and the Borgu kingdoms and thereby developed trade routes farther to the north. The Benin Empire (1440–1897; called "Bini" by locals) was a pre-colonial African state in what is now modern Nigeria. It should not be confused with the modern-day country called Benin,
Yoruba people variety taught in schools and spoken by newsreaders on the radio, has its origin in the Yoruba grammar compiled in the 1850s by Bishop Samuel Ajayi Crowther, who himself was a creole from Sierra Leone. Though for a large part based on the Oyo and Ibadan dialects, it incorporates several features from other dialects. As of the 7th century BCE the African peoples who lived in Yorubaland were not initially known as the Yoruba, although they shared a common ethnicity and language group. By the 8th century, a powerful Yoruba kingdom already existed in Ile-Ife, one of the earliest in