Destcription of the chapter:
The causes and the course of a clash of doctrines relating to the
universality an Emperor's power (the Saxon family) and the power of the
Pope, and the mechanisms for financing it. The economic aspects of the
principle of seniority. The ideological background of the coming
confrontation between the Christina west with the Islamic east. The reasons
for the Norman invasion on England, and the resultant complexity of
relationships between vassal's, which had a marked impact upon shaping the
doctrine of a national state.