The crusades led to an increase in travel and trade in western europe as:

The Crusades led to an increase in travel and trade in Western Europe as: Europeans were exposed to an advanced culture with previously unseen luxuries.

The Crusades constituted a series of religious wars between Christians and Muslims initiated originally to secure control of holy sites which were sacred by both groups.

During the Crusades trade was an important component as new goods and ideas were exchanged.

your mothers brothers brother in law would be your father.