Answer:
The Asante Kingdom and the Oyo Empire were active in slave trade, they became wealthier and created bigger armies with the guns and products they were receiving in return so they became powerful states.
Step-by-step explanation:
The Atlantic slave trade also known as the Triangular Slave Trade was a system of trade where Africa sent slaves to America, America sent materials like sugar and tobacco to Europe, and Europe sent textiles, wine and guns to Africa.