Explain the decline of Charlemagne's empire
Decline of the Empire. Before his death in 814, Charlemagne had his son, Louis the Pious, crowned emperor. As soon as Charlemagne died, the empire began to collapse. Louis the Pious was a weak leader and could not hold together the vast territory. He divided the empire among his three sons who immediately began to fight over their allotted lands. The two younger sons, Louis the German and Charles the Bald, joined forces against their elder brother, Lothar (or Lothair), who was then emperor. In 842, the younger brothers formalized their union by the Strasbourg Oaths.