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| caption = Iranian stamp for the 700th anniversary of his death ...gfried J. de |title=History of Humanity: From the seventh to the sixteenth century|url=https://books.google.com/books?id=PvlthkbFU1UC|year=1994|publisher=UNES ...

...d in pre-[[Achaemenid]] Iran. The oldest and largest known qanat is in the Iranian city of [[Gonabad]], which, after 2,700 years, still provides drinking Iranian philosophers and inventors may have created the first batteries (sometimes ...

...[[history of Islam]], traditionally dated from the 8th century to the 13th century.<ref name=Saliba>{{cite book|last=Saliba |first=George |author-link=George ...Arabic Translation Movement in Baghdad and Early 'Abbāsid Society (2nd-4th/8th-10th Centuries) |location=London |publisher=[[Routledge]]}}{{page needed|da ...