Lotharingia
Western European kingdom and duchy (855–959)
Lotharingia was a historical region and an early medieval polity that existed during the late Carolingian and early Ottonian, from the middle of the 9th to the middle of the 10th century. It was established in 855 by the Treaty of Prüm as a distinct kingdom within the Carolingian Empire, but abolished already in 869-870 when it was divided by...