I just recalled reading something on the net maybe 5 years back. Someone or someone made a connection that Africans may also have visited the Americas. Are the Apache the tribe who's skin is very dark and they have a tendency to have curly hair? The Seminole as well have African blood but I think most if not all was from very recent intermixing. Around the time of the Civil War. And I do not think it is with in the entire tribe. I know this from looking into the Seminole tribe to get a closer connection to my grandmother.