<Li> Americas indigenous <Ul> <Li> U.S. Natives </Li> </Ul> </Li> <Ul> <Li> U.S. Natives </Li> </Ul> <Li> Brazil <Ul> <Li> Lei Áurea </Li> </Ul> </Li> <Ul> <Li> Lei Áurea </Li> </Ul>

What important product from the west indies was at the center of the triangular trade route