An element common to the decline of both the Abbasid and the Roman empires was

Question

Quizplus · Accepted Answer

Both the Abbasid and Roman empires relied heavily on mercenary soldiers, who were often more loyal to their own interests rather than the empire they served. This led to a lack of strong unity and loyalty within the military, making it difficult for the government to effectively control and maintain power. Additionally, the high cost of paying and maintaining mercenaries put a strain on the economy of both empires.

An Element Common to the Decline of Both the Abbasid