[NeroASERCH]

There was/is continental drift of course, but this was not a factor in the spread of human beings, simply because we are too "new", evolutionally speaking, for that extremely slow drift to matter in our spread.

See - http://science.howstuffworks.com/env...-migration.htm

Thanks Kathir ! find it quite hard to believe that 400,000 year ago the continental structures were the same