Question

What might be the cargo of a ship moving from Europe to West Africa in the trans-Atlantic slave trade?

Answer 1

Slaves?

Answer 2

The African slave trade

Answer 3

from EUROPE to Africa .. ? The loot to be able to pay the slave traders for the slaves ... whatever form that loot took.
Horribly sorrowfully, the cargo from W Africa to US transatlantic would have been jam packed with slaves. And, it seems, that the smell was detectable on other ships if the wind was in the right direction.
Hard to write some of these words.

Answer 4

food and slaves maybe