Oyo Empire tsetse fly. Cavalry was the long arm of the Oyo Empire. Late 16th and 17th century expeditions were composed entirely of cavalry. There were drawbacks to this. Oyo could not maintain its cavalry army in the south but could raid at will. Cavalry in highly developed societies such as Oyo was divided into light and heavy. Heavy cavalry on larger imported horses was armed with heavy thrusting lances or spears and also with swords. Light cavalry on smaller indigenous ponies was armed with throwing spears or bows. Infantry in the region around the Oyo Empire was uniform in both armor
Oyo Empire became the southern emporium of the Trans-Saharan trade. Exchanges were made in salt, leather, horses, kola nuts, ivory, cloth and slaves. The Yoruba of metropolitan Oyo were also highly skilled in craft making and iron work. Aside from taxes on trade products coming in and out of the empire, Oyo also became wealthy off the taxes imposed on its tributaries. Taxes on the kingdom of Dahomey alone brought in an amount estimated at 638 thousand dollars a year. By 1680, the Oyo Empire spanned over 150,000 square kilometers. It reached the height of its power in the 18th century. And