alternatehistory.com

So I remember watching a history channel episode a couple years back about the Sahara once being these fertile plains thousands of years ago. I had forgotten about it, but it came back to me today when me and my friend were talking about it, and I decided to look into it more.

About 5 or 6,000 years ago, the Sahara's climate changed over a couple hundred years from lush greens to the Sahara desert we know and love now, simultaneously with climate change across North Africa. There have been wet and dry periods in the Sahara over the past 30,000 years.

How large would the effects be if the Sahara remained wet, lush, greens? Could we see the center of civilization developing in the Sahara instead of in Egypt (if memory serves the people who founded Egyptian civilization had migrated from the once fertile Sahara though I'm probably wrong there) and Mesopotamia?
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