Dominions of Sweden German principalities, the Swedish kings in their roles as princes and dukes, or "Reichsfürsten", of the Holy Roman Empire took part in the German diets from 1648 until the dissolution of the Holy Roman Empire in 1806. Following the Thirty Years' War, the Peace of Westphalia in 1648 assigned to Sweden the two bishoprics of Bremen-Verden, with the exclave of Wildeshausen. All of them were ceded to Hanover in the peace treaty of 1719. By the Peace of Westphalia in 1648 Sweden received Swedish Pomerania, situated along the German Baltic Sea coast. The whole Duchy of Pomerania was under Swedish
Pomeranian War Frederick's downfall and to humiliate and destroy the Swedish queen Louisa Ulrika of Prussia, Frederick's sister. The Hats faction was also encouraged to declare war by France, whose wishes were central to the Hats' actions. Frederick's invasion of Saxony in 1756 was used as a pretext for war, being denounced by both Sweden and France as a violation of the Treaty of Westphalia of 1648, of which they were both guarantors. On March 21, 1757 the governments of France and Austria agreed a convention in which Sweden and France explained that they had to maintain Germany's freedom in line with