The portuguese dominate the slave trade early, build all kinds of forts and castles off the coast of africa. After about the 16 hundred, you can see the demograph ix change. The natives forming like a third of the slave numbers indentured servants from europe,. rite a people, who are essentially temporary slaves, forming a third. A frederick douglas, whom i've always considered to be a sort of the black founding father is one of the more impressive human beings in american history.