For ten points, name this 1648 agreement that ended the Thirty Years War.
During this treaty's negotiation, one famous participant wrote a letter to his son stating "behold, with how little wisdom the world is ruled!" As part of this treaty, France gained suzerainty, but not actual rule, over an alliance of ten cities called the "Decapole," which corresponds to modern Alsace. This treaty was ambiguous as to whether the city of Bremen was included in the Bishopric of Bremen, which would lead to another war. This treaty confirmed the Duke of Bavaria as an Imperial elector, but restored the electoral rights of the Palatinate. This treaty would be followed a decade later by the Peace of the Pyrenees. The agreements of Munster and Osnabruck jointly made up this treaty, which ended a war involving Wallenstein and Gustavus Adolphus and helped establish the notion of sovereign nation-states. For ten points, name this 1648 agreement that ended the Thirty Years War.
During this treaty's negotiation, one famous participant wrote a letter to his son stating "behold, with how little wisdom the world is ruled!"
Treaty of {Westphalia}