What is the relationship between the Crusades
and international trade?

During the late Middle Ages, Northern and Central Italy became far more prosperous than the south of Italy, with the city-states, such as Venice and Genoa, among the wealthiest in Europe. The Crusades had built lasting trade links to the Levant, and the Fourth Crusade had done much to destroy the Byzantine Roman Empire as a commercial rival to the Venetians and Genoese.

Explanation:

c. it required that townships set aside land for public schools.