After Crusades, Europe underwent great changes in the fields of churches, commerce and intellectual changes. Churches became richer after crusades because the feudal lords were offering Tithes which means ten percent of the lands which they occupied were sacrificed to the church and its development.
There was a good trade relationship that enhanced in between Arabs and Europe. They bartered goods like precious stones and perfumes with fur. Europeans also became knowledgeable in construction of ships and many voyagers and explorers were sent in search of new islands and new geographic locations.
Feudalism had gradually started to disappear. The need for education in order to learn the holy bible was realized. They were introduced to the knowledge of mathematics, engineering and warfare.