People didn't move as individuals without group protection. Historically you typically moved with the group/tribe. Historically one did not leave the group to

People didn't move as individuals without group protection. Historically you typically moved with the group/tribe. Historically one did not leave the group to escape things that have modern definitions but did not historically. Historically there was outcasting, banishing, exiling etc., which was a punishment knowing those people would be in a precarious position to survive outside the tribe.