[blam]

"The main effects would have been migration. You either got run off when your world turned to ice or you went back after the ice left."

Or, you planned and lived with it. The cold is also why we have white people...vitamin 'D' and all.

[U S Army EOD]

If you currently don't have the technoligy to live with it, you beat feet. This would explain why Northern Africa got a head start on Northern Europe. Also, Northern Europe may have been more advanced than we think. When you build things out of wood they just don't last as long as things built out of limestone. Then there is no record to show you were there.