Answer:
that's too much but
- The Crusades resulted in religious hatred and atrocities committed by both Christians and Muslims in the name of religion.
- Crusaders directed their religious fury against Jews in Europe, leading to the killing of entire Jewish communities.
- The Crusades contributed to the growth of trade in Europe, as returning crusaders brought back luxurious goods from the Middle East, expanding markets and increasing trade routes.
- The Crusades played a role in the development of a money economy, as nobles needed money to finance their journeys, leading them to allow peasants to pay rents in money instead of grain or labor, undermining serfdom.
- The power of monarchs increased due to the Crusades, as they gained the authority to levy taxes to support the Crusades and some monarchs, such as Louis IX of France and Richard I of England, gained prestige by leading crusades.
- Contacts with the Muslim world during the Crusades expanded Europeans' knowledge of the wider world and eventually led to the Age of Exploration, as curiosity and desire for direct trade with India and China emerged.
- The Crusades had a significant impact on the Middle East, contributing to power struggles among Muslims and briefly uniting lands under Saladin. The Fourth Crusade further weakened the Byzantine Empire, which eventually fell to the Ottoman Turks in 1453.