Partition of the Carolingian Empire
1. When Louis the Pious died in 840, his eldest son Lothar claimed the entire empire
2. Younger brothers, Charles the Bald and Louis the German, went to war against him
3. Oaths of Strasbourg in 842 between the 2 youngest, saying they are allied against the big brother (in old French and high German)
4. Verdun Treaty in 843 made official and definitive a partition of the empire
5. Western Frankish realm (Francia Occidentalis) for the Bald, Easter Frankish realm (Francia orientalis) for the German and land of Loather (the middle and northern Italy) for Lothar