The Northern Crusades were a series of military campaigns that took place from the late 12th to the 15th centuries, aimed at converting pagan peoples in Northern Europe to Christianity. These crusades, primarily led by the Catholic Church, targeted regions such as the Baltic and Scandinavia, marking an expansion of the original Crusading Movement beyond the traditional Middle Eastern focus. They played a significant role in the Christianization and political consolidation of the region, influencing the cultural landscape of Northern Europe.