Editing 872 (section)

==== Arabian Empire ====
* The [[Zanj Rebellion]]: The [[Zanj]] (black [[Slavery|slaves]] from [[East Africa]]) defeat the Abbasid forces, led by caliphal regent [[Al-Muwaffaq]] (brother of caliph [[Al-Mu'tamid]]). Hostilities in [[Mesopotamia]] (Southern [[Iraq]]) will preoccupy Al-Muwaffaq, and the Zanj will remain on the offensive over the next several years.<ref>{{harvnb|Waines|1992|pp=38 ff., 108 ff., 120 ff., 136, 137 ff., 152 ff., 156, 158, 164 ff.}}; {{harvnb|Popovic|1999|pp=45–72}}; {{harvnb|McKinney|2004|pp=464–66}}; {{harvnb|Nöldeke|1892|pp=152–62.}}</ref>
* In [[Egypt in the Middle Ages|Egypt]], the first hospital (''[[bimaristan]]'') is built in [[Cairo]] by the Abbasid governor, [[Ahmad ibn Tulun]]. Physician licensure becomes mandatory in the [[Abbasid Caliphate]].<ref>{{harvnb|Islamic Culture and the Medical Arts|2011}}</ref>