What was the Thirty Years' War primarily fueled by?

The Thirty Years' War was primarily fueled by power struggles and religious conflicts, especially between Protestant and Catholic states within the Holy Roman Empire. The war began in 1618, sparked by tensions arising from the Protestant Reformation and resulting in deep divisions in Europe along religious lines. Various factions sought not only to assert their religious beliefs but also to gain political control and influence in the region.

This conflict drew in multiple nations and was characterized by a mix of territorial ambition and religious fervor. Several significant battles and political maneuvers throughout the war reflected these underlying motivations, making power dynamics and religious affiliations key components of the prolonged struggle. Ultimately, the conflict led to a significant reorganization of power in Europe and the establishment of the principle of state sovereignty.