How did the crusades contribute to the renaissance in europe

The Renaissance was a rebirth of Classical thought and ideas in Western Europe. ... This sparked the movement that would become the Renaissance. Furthermore, the Crusades established many trade routes with the East. Italian merchants realized that they could make a lot of money transporting Crusaders to the Holy Land

the difference is that white collar worker performs skills like worker as a scientist or well blue collars do physical work and they do services like being a cook.

the two things that develop a strong social foundation are: a. separation of church and states e. education received attention separation of church and states separate the illogical  argument that came from religious beliefs to a fact based belief. while education will make us remember the past to avoid the repeat of our mistakes.