Did you know? Time since the earliest farming (11,500 y) is 2.5 x Time since building of the Great Pyramid of Giza / Cheops / Khufu (4,580 y)
Other land in Liberia (2018) (26,300 km^2)
/fact/other-land-in-liberia
Link
Yes, there's now a book based on these numbers. Oxford University Press: July 2018.
Click here to learn more about it.
Click here for Podcast: Andrew Elliott interviewed for New Books Network.