Did you know?
Length of the Congo River (4,700 km) is 40 x Length of Hadrian's Wall in Northern England (117.5 km)
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Land used for agriculture in Morocco (2011) (301,400 km^2)
If this was a standard unit ...
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.