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
Legends of Africa learning on Earth. The brilliance of the city was such that it still shines in the imagination after three centuries like a star which, though dead, continues to send its light toward us. Such was its splendor that in spite of its many vicissitudes after the death of Askia, the vitality of Timbuktu is not extinguished. The Oyo Empire (c. 1400–1835) was a West African empire of present-day Nigeria. The empire was established by the Yoruba in the 15th century and grew to become one of the largest West African states encountered by colonial explorers. It rose to pre-eminence through