Oyo Empire could act as a buffer between Oyo and Imperial Benin. By the end of the 16th century, the Ewe and Aja states of modern Benin were paying tribute to Oyo. The reinvigorated Oyo Empire began raiding southward as early as 1682. By the end of its military expansion, Oyo's borders would reach to the coast some southwest of its capital. It met little serious opposition until the early 18th century. In 1728, the Oyo Empire invaded the Kingdom of Dahomey in a major campaign of its cavalry. Dahomey warriors, on the other hand, had no cavalry but many firearms. Their
Yoruba people in the Atlantic slave trade Yoruba people in the Atlantic slave trade The Yoruba people, among the most heavily targeted, contributed significant cultural and economic influence upon the Atlantic slave trade during its run from approximately 1400 until 1900 CE. From 1400 onward, the Oyo Empire's imperial success made the Yoruba language a "lingua franca" almost to the shores of the Volta. Toward the end of the 18th century, the Oyo army was neglected as there was less need to conquer. Instead, Oyo directed more effort towards trading and acted as middlemen for both the Trans-Saharan and Trans-Atlantic slave trade. Europeans bringing salt arrived in