Answer:
A. It didn't have enough soldiers and equipment to face the Europeans again.
Step-by-step explanation:
The Battle of Tours (732) between the Franks and the Muslims that came from Spain, took place in Tours and Poitiers, France and is remembered as the war that stopped Western Europe from Muslim conquest.
Charles Martel was the leader of the Franks and based his strategy on tactics and disciplined warriors that managed to defeat the Muslim warriors that had no strategy planned. This left the Muslim empire out of soldiers and equipment so they returned to the Pyrenees Mountains in Spain.