History:
ADHAOs spread likely came from a mix of people choosing to move and being forced to move. Those who chose to move might have sought better jobs or escaped trouble where they lived. This couldve led to groups of people with this surname settling in certain areas, or spreading out more widely depending on how far they traveled.
Forced moves, like those caused by slavery, wars, or political unrest, also played a big part. People with this surname might have been moved against their will, settling in new places and changing where this surname is found. Without that, we can only guess at the general patterns of movement.
