Final answer:
The correct order of events related to European trade in Africa was 4, 3, 1, 8, 2.
Step-by-step explanation:
The correct order of events related to European trade in Africa is: 4, 3, 1, 8, 2.
In the 15th century, European exploration and trade networks started with European contact and exploration of Africa. This led to the establishment of trade networks in gold, ivory, and slaves, primarily by the Portuguese. The Trans-Atlantic slave trade, part of the Triangle Trade, expanded to incorporate the Americas. The Berlin Conference then played a role in the colonization process in Africa, as European colonial powers divided up the continent.