The Most Significant Historical Consequence of the Successful Defenses of Constantinople

The most significant historical consequence of the successful defenses of Constantinople against direct Arab attacks was the

A) demonstrated superiority of Greek fire.
B) deflection of Arab expansion away from Latin Christendom.
C) cessation of Arab expansion for nearly three centuries.
D) recovery of Syria, Palestine, and Egypt by the Byzantines.
E) permanent move of the Byzantine capital to Ravenna.