What were some of the effects of the Crusades?

Solution: During the Crusades, a lot of unruly Aristocracy that were causing trouble in Europe left for the holy land. This led to changes in trade, as the demand for new goods led to a boom in Mediterranean trade. As a result, Italian and Venetian Merchants became wealthier, which in turn financed exploration and led to the Italian Renaissance. Additionally, the Crusaders were exposed to scientific and mathematical knowledge from the Middle East that had not yet made its way to Europe. This new knowledge was brought back to Europe and inspired scientific and mathematical study. The traveling soldiers also broadened their worldview by experiencing a completely different culture, which led to a change in their perceptions and attitudes towards other cultures. The Catholic Church also benefited financially, which led to an increase in Catholic Church power. As a result of the effects of the Crusades, there was an impulse to explore the world, and explorers like Vasco de Gama and others began their journeys to discover new lands and trade routes.