It was mostly "c. The end of the Crusades" that helped to bring about an increase of trade within western Europe during this time, since this period had been previously dominated by mass violence that disrupted trade routes.
Answer:
Army: Douglas MacArthur
Navy: Chester Nimitz
Explanation:
During World War II, the American Army in the Pacific was led by Douglas MacArthur while the Naval arm of the war was led by Chester Nimitz.
The answer is C hope this helps