Before 1607, which item was not heavily traded between West Africa and European nations?

Slaves were not heavily traded between Europe and West Africa prior of 1607. Even after 1607, the amount of slaves that went to Europe is small compared to those that went to the New World (Americas and Caribbean islands). Slave Trade will flourish along the Middle Passage. This was one section of the Triangular Trade routes that operated between the Americas, Europe, and Africa.