Persian
The Abbasids fell to an ambush of the mongols; while Umayyads fell to economics.
mortality decline
what might cause a culture today to decline or disappear
SEX is the only cause of mortality decline....
disease.
Abbasid Caliphate was created in 750.
disease.
Ideology has not declined.
The source of Abbasid's power was a standing army.
br />It caused them decline because there was so many killed
Hij