[blam]

"My contention is that if we look at the similarities of these apparently random groups of people drifting in waves mostly northwestward across the countryside, we may find that they are just different clans or tribes of the same people."

I agree. Why were they migrating, weather/climate?

[LostTribe]

>I agree. Why were they migrating, weather/climate?

Have never seen anyone specifically address that question. In the absence of better information would have to speculate that it was "for the usual reasons".

But Dr. Iben Brownings thesis that changes in climate due to unreported volcanic activity was one of the biggest reasons for migrations makes sense to me, in both ancient and modern history. (The Little Ice Ages in Europe as a prime example.)