Al-Ma'mun reign (jan 14, 813 – jun 18, 833)
Description:
Some historians believe that the recent build of Baghdad, the caliphs founded centers of story, including the Beyt al-Hikma, or House of Wisdom can be partly credited to Al-Ma'mun but some give credit to earlier caliphs.Added to timeline:
Date:
jan 14, 813
jun 18, 833
~ 20 years