The Crusades, spanning from 1095 to 1272, were a series of religious wars that shaped medieval Europe and the Middle East. These campaigns, initiated by Pope Urban II, aimed to reclaim the Holy Land from Muslim rule and aid the Byzantine Empire against the Seljuk Turks. The Crusades had far-reaching consequences, including cultural exchange, economic growth, and political shifts. They strengthened the Catholic Church's influence in Europe, led to the rise of new Islamic dynasties, and set the stage for future European expansionism. The legacy of the Crusades continues to influence modern interpretations of East-West relations.