What are two ways the crusades changed Europe politically

In Europe, the Crusades led to economic expansion; increased trade and use of money, which undermined serfdom and led to prosperity of northern Italian cities. They led to increased power of the monarchs, and, briefly, to increased power of the papacy. In the Middle East, Muslim regimes united to fight the invaders and, under Saladin, began to reunify the region.

Explanation:

religion played a major role in the american revolution by offering a moral sanction for opposition to the british--an assurance to the average american that revolution was justified in the sight of god. the revolution strengthened millennialist strains in american.

i really do want to but i just don't know it i'm so sorry : (