How did the Crusades lead to the Renaissance?

The Crusaders contributed to the increase of trade by demanding more of the goods found in Asia. This increased demand, in turn, led to yet more trade with the Muslim world. Using what they had learned, such as navigation techniques, Europeans then sought trade with civilizations on other continents. Contacts with Muslim scholars and their preserved greek and roman texts brought the Europeans a wealth of knowledge about medicine, art and government, much of which contributed to the change and learning during the Renaissance.