What effect did the crusades have on trade in western europe?

Effects of the Crusades
The Crusades kept all Europe in a tumult for two centuries, and directly and indirectly cost Christendom several millions of lives (from 2,000,000 to 6,000,000 according to different estimates), besides incalculable expenditures in treasure and suffering. They were, moreover, attended by all the disorder, license, and crime with which war is always accompanied. On the other hand, the Holy Wars were productive indirectly of so much and lasting good that they form a most important factor in the history of the progress of civilization. The effects of the crusades influenced:

The role, wealth and power of the Catholic ChurchPolitical effects Effects of the Crusades on CommerceEffects of the Crusades on FeudalismSocial development Intellectual development Social Effects of the CrusadesEffects of the Crusades - Intellectual DevelopmentEffects of the Crusades - Material DevelopmentEffects of the Crusades - Voyages of Discovery

Ithink the answer is a i’m just trying to others

The answer is b.african american abolitionists emphasized legal and social equality