What part of Haiti's people are descended from enslaved Africans brought during colonial times?

A majority of the people were brought from West Africa.

Explanation:

The slaves brought by the Spanish to Haiti hailed from the African continent. Although there were slaves brought from across the continent, majority of the slaves were from West Africa, particularly from nations like Morocco, Senegal, Ivory Coast and Congo.

Countries in the Western part of Africa, from Senegal to Congo were brought to Haiti. Although there were people who were from the other parts of the continent as well, the majority were from this region.