The Northern Seven Years' War (1563-1570) was a conflict primarily involving the kingdoms of Sweden, Denmark-Norway, and Poland-Lithuania. The war arose from territorial disputes and competition for dominance in the Baltic Sea region. It saw various battles and shifting alliances, with each side seeking to expand its influence. The war concluded with the Treaty of Stettin in 1570, which established a temporary peace. While the conflict did not result in significant territorial changes, it marked a crucial period in the struggle for power in Northern Europe, influencing future relations among the involved nations.