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Given that the desert formed > 2 mya and human agriculture originated ~12 kya, this seems unlikely.

Modern humans themselves originated only 200 kya.

<https://ui.adsabs.harvard.edu/abs/2014Natur.513..401Z>

<https://www.worldhistory.org/article/1886/origins-of-world-a...>




Article from 2018 referencing the study I was referring to:

https://www.sciencealert.com/green-sahara-early-holocene-agr...


Right.

We do know that the climate of the Sahara differed and it was grasslands in portions for a time.

But it wasn't farmed (your own article notes that the seeds found were wild), and the processes which re-asserted the pre-existing desert landscape were not human-induced.




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