Answer:
I have attached the relevant image below.
Step-by-step explanation:
The image is a map of Africa, with the most relevant European settlements at the time.
As can be seen, all of them were located in subsharan Africa, because the Mediterranean coast of Africa was a region that had developed from ancient times, and that was in the control of the Ottoman Empire.
The European coastal settlements mostly cluster in west Africa, where the majority of slave ports (ports where slave were taken to the Americas) were located.
There are also some settlements in East Africa, and two settlements to the south of the Gold Coast: Luanda, an important slave port under Portugese control, and Cape Town, initially a Dutch colony.