Final answer:
The Crusades showed vitality in Western Europe, the papacy's assertion of power, and a broader European expansion, but were not an example of the Roman Church's subservience to the Eastern Orthodox Church.
Step-by-step explanation:
The Crusades can be characterized in many ways, but one description does not fit well with historical accounts. While the Crusades were a sign of vitality in Western Europe, an attempt by the papacy to assert its preeminence, and part of a general movement of European expansion, they were not a demonstration of the Roman Church's subservience to the Eastern Orthodox Church. In fact, one of the effects of the Crusades was the further estrangement between the Roman Catholic and Eastern Orthodox Churches, a relationship already complicated by the East-West Schism. The Crusades began with the call to liberate Jerusalem from Muslim control and expanded into a broader conflict that included campaigns in the Baltic and the Iberian Peninsula while also targeting heretics and political enemies of the popes within Europe itself.