Oyo Empire

The Oyo Empire was the most powerful and extensive of the Yoruba states, dominating much of what is now southwestern Nigeria and the Republic of Benin for several centuries through its formidable cavalry and sophisticated political institutions.

According to Yoruba tradition the kingdom was founded by Oranmiyan, a prince of the sacred city of Ile-Ife, the religious and cultural heartland of the Yoruba, with its origins conventionally placed around the fourteenth century, though the precise founding date is legendary and approximate. The empire was ruled by a sacred king, the Alaafin, who reigned from the capital at Oyo-Ile (Old Oyo) and whose authority, though considerable, was checked by a powerful council of state called the Oyo Mesi, led by the Bashorun, and by the Ogboni secret society, creating a notable system of constitutional balance. Oyo's military power rested above all on its cavalry, made possible by access to horses through northern trade, which gave it a decisive advantage over its forest-dwelling neighbours and allowed it to expand across the savanna and grasslands. The empire reached its height in the seventeenth and eighteenth centuries, when it controlled a broad domain, reduced numerous Yoruba and neighbouring states to tributary status, and made the powerful kingdom of Dahomey a vassal. Oyo grew wealthy through trade, including the export of enslaved people to the Atlantic coast, and exerted strong cultural influence across the region. From the late eighteenth century the empire began to decline amid internal power struggles between the Alaafin and his chiefs, provincial revolts, the loss of control over Dahomey, and pressure from the Islamic Sokoto Caliphate to the north, whose forces and Fulani jihad contributed to the sack of the capital in the 1830s. The empire collapsed into a period of civil wars among Yoruba successor states such as Ibadan, and the much-diminished Oyo state finally came under British control with the establishment of a protectorate in 1896.

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