A major impact of the crusades was the effect it had on trade. The pilgrimage of thousands of Europeans to the Holy Land created a need for new routes for supply shipments to feed and arm the crusaders. A third major impact of the crusades was the effect it had on the role of feudalism in the lives of Europeans.
Answer: The crusades affected the trade in Europe, Feudalism ( a system of land ownership and duties), cities in Italy grew in size which became cities of the Renaissance.
