GLOBAL PERSPECTIVES
The Decline and Fall of Empires

Apr 15, 2015 | 08:00 GMT

A view of the Mausoleum of Barquq from the northern minaret in the City of Dead in Cairo.
(Marco Di Lauro/Getty Images)
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Apr 15, 2015 | 08:00 GMT
(Marco Di Lauro/Getty Images)
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