The medieval period of Arab history - https://en.wikipedia.org/wiki/History_of_the_Arabs#Medieval_...

See also the results of a Google Scholar search at https://scholar.google.com/scholar?q=Medieval+Arabs

"Religious influences on medieval Arabic philology"

"Mediterranean in the Works of the Early Medieval Arabic Geographers and Historians"

"Glaucoma in the Medieval Arabic World"

"Stars and Numbers: Astronomy and Mathematics in the Medieval Arab and Western Worlds"

EDIT: also Medieval Africa. https://en.wikipedia.org/wiki/History_of_Africa#Medieval_and... including Medieval Somalia https://en.wikipedia.org/wiki/Category:Medieval_Somalia