Europeans Began to Search in Earnest for an Alternate Route

Multiple Choice

Europeans began to search in earnest for an alternate route to Eastern Asia after

A) they read the fabulous tales of Marco Polo.
B) they became aware of the spices available there.
C) the city of Constantinople was lost to them as a center of trade.
D) Muslim conquerors introduced them to Eastern wares.
E) the Mongol conquest disrupted their overland trade routes.