If I remember correctly - and I might not because it's been a while - the theory was that when the climate got colder and caused the crops to fail the tribes had to set out in search of more hospitable areas.
If I remember correctly - and I might not because it's been a while - the theory was that when the climate got colder and caused the crops to fail the tribes had to set out in search of more hospitable areas.
(post is archived)