What Was the End Result of Increased Contact Among Europeans,Muslims,and

What was the end result of increased contact among Europeans,Muslims,and Byzantines during the second half of the Middle Ages?

A) These three groups of people became more and more alienated from each other.
B) Global trade and exchange of learning increased among all three.
C) The three cultures better understood how many things they held in common.
D) Western Europe suffered a steep decline in power and stability.
E) Europe became closely allied with the Byzantine Empire in the face of Muslim threats.