Although El Salvador is the only Central American country with no official black percentage, El Salvador has had black African slavery in its history during the colonial era, over time they mixed with both Amerindians and Europeans causing their offspring to join into the general Mestizo population.
El Salvador's unique situation is that it does not have an officially recognized black population percentage. However, it has a history of black African slavery during its colonial period, which eventually led to the blending of its population with both Amerindians and Europeans, resulting in their mixed descendants becoming part of the broader Mestizo community.