The Crusades left religions hear it behind them. Because many people were killed in the name of other religions. in the Middle East, both Christians and Muslims committed appalling actress sites in the name of religion This is important, because the crusades left religious haret behind them, reason why was because many people were killed in the name of other religious. Like Christians and Muslims, they killed each other. Document 2 states that there was an economic impact of the Crusades. This is important because the economic impact, was that the crusaders used fleets to open new markets in the crusaders states.They also used fleets to for the crusaders, when they had to travel to the Holy Land. For these reason, the results were was more positive than