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Pop. of Cairo, Egypt (9.28 million people) is 4 x Number of active personnel in the Chinese Armed Forces (2.3million )
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Forest in Brunei (2011) (4,140 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.