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,
History of the Jews in Nigeria with lots of Jewish materials by different Rabbis. There are also key Synagogues in Port Harcourt and Lagos. The Jewish community among the Yoruba are often referred to as the Bnai Ephraim (Children of Ephraim). Most of them concentrated around various communities in Ondo state since the 1930s, about 2000 people in all. According to their traditions, they came to Nigeria by way of Morocco sometime in the 16th century after the expulsion of the Jews from Spain in 1492. Their language is a mixture of Moroccan Arabic with Yoruba, but with bits of Aramaic, such as ima for “mother.”