10 Peace Treaties That Shaped the Middle Ages - Medievalists.net

Medieval rulers frequently resolved wars through diplomacy rather than battlefield outcomes. Peace agreements could end conflicts, divide kingdoms, and alter political boundaries across Europe and the Middle East. The Baqt established long-term terms between Muslim Egypt and Christian Nubia, including nonaggression, free movement, trade, and an annual exchange of slaves for food supplies, lasting about 700 years. The Peace of Verdun followed the fragmentation of the Carolingian Empire, dividing it among Louis’s sons into West Francia, Middle Francia, and East Francia, which later developed into France and Germany. Other treaties, such as the Saint-Clair-Sur-Epte, responded to Viking threats by granting land and forming alliances that enabled new powers like Normandy to emerge and influence later European affairs.

"This was an agreement between the Muslim rulers of Egypt and the Christian rulers of Nubia (present-day Sudan), in which both sides promised not to attack each other, and to have free trade and travel between their two states. The agreement also stipulated that Nubians would send 360 slaves each year to Egypt, and in return would receive shipments of wheat and lentils. The peace lasted about 700 years, making this the longest-lasting peace treaty in history."

"After a brief civil war, the three sons of Louis concluded a treaty that split the empire into three states - Charles the Bald would rule West France, Lothair I would receive Middle Francia, and Louis the German would get East Francia. West Francia and East Francia would eventually form into the nations of France and Germany."

"The ninth-century would see large parts of Europe threatened by Viking raiders, which would eventually compel the French king Charles the Simple to seek an alliance with a Viking leader named Rollo. In return for defending France against other Norse attackers, Rollo was given the land of Normandy, where he and his followers settled. Rollo also converted to Christianity and married Charles' daughter Gisla. He and his descendants would establish the Duchy of Normandy, which would become a major force in French, English, and European affairs between the tenth and twelfth centuries."

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