Case on point. Slavery in the "America'" can be focused on the 10% of African slaves that were received by the United States.
The other 90% were received in the Caribbean, Central and South America. With 90% settling in other regions, shouldn't
those other regions be 90% wealthier than the US?
3%. We only received 3% of the total worldwide slave trade. As you said, the bulk went to Brazil and the Caribbean.