Oyo Empire metropolitan Oyo. This may have been fine in the 15th century when Oyo controlled only its heartland. But to make and maintain farther conquest, the structure underwent several changes. Oyo maintained a semi-standing army of specialist cavalry soldiers called the "Eso", the "Esho" or, formally, the Eso of Ikoyi. These were 70 junior war chiefs who were nominated by the Oyo Mesi and confirmed by the Alaafin of Oyo. The Eso were appointed for their military skill without regard to heritage and were led by the Are-Ona-Kakanfo. After Oyo's return from exile, the post of Are-Ona-Kakanfo was established as the
Yoruba people "Basal Human" (BE) admixture. Yoruba people The Yorùbá people (name spelled also: Ioruba or Joruba; ) are a Niger-Congo ethnic group of southwestern and north-central Nigeria, as well as southern and central Benin. Together, these regions are known as Yorubaland. The Yoruba constitute about 44 million people in total. Majority of this population is from Nigeria, where the Yorùbá make up 21% of the country's population, according to the "CIA World Factbook", making them one of the largest ethnic groups in Africa. Most Yoruba people speak the Yoruba language, which is tonal, and is the Niger-Congo language with the largest