While the traditional Crusades aimed to reclaim the Holy Land, the Northern Crusades focused on the Christianization of Europe’s pagan tribes. The Baltic region, including present-day Latvia, was one of the last bastions of paganism in medieval Europe. Its peoples—such as the Livonians, Curonians, Semigallians, and Latgalians—held deeply rooted animistic beliefs, worshiping nature deities and spirits.
The Catholic Church, eager to expand its influence, declared the region a new crusading frontier. Armed with papal approval, missionaries and knights from Western Europe set out to convert the Baltic tribes. The Teutonic Knights, a German military and religious order, would play a central role in this mission.