Final answer:
Most black Americans have ancestral ties to West Central Africa and the Bight of Biafra. They were concentrated in areas like Virginia and the Five Tribes in Indian Territory. Migration also played a role in dispersing their ancestral homeland.
Step-by-step explanation:
The ancestral homeland for most black Americans is West Central Africa and the Bight of Biafra (present-day eastern Nigeria). Enslaved African people from these regions were concentrated in areas like the lower-Chesapeake (York and Upper James Basin) in Virginia and the Five Tribes in Indian Territory. The migration of African Americans to new states and territories throughout the 1870s also contributed to the dispersion of their ancestral homeland.