Historical Events Dec 9 Battle of Marj Ardabil, Turkic Khazar army led by Barjik defeats Umayyad force, with 20,000 killed including general al-Jarrah ibn Abdallah, whose head is mounted on a throne 729 AD History by Year 731 AD Famous Living People by Age 20-29 30-39 40-49 50-59 80-89 Over 90