Not necessarily Holy, but deferred to and protected the PopeNot necessarily Holy, but deferred to and protected the Pope Not necessarily Roman, but GermanNot necessarily Roman, but German Not necessarily an Empire, but a collection of German Principalities (from Prince )Not necessarily an Empire, but a collection of German Principalities (from Prince ) Christianity the unifying force all over EuropeChristianity the unifying force all over Europe Excommunication and Interdict kept kings and princes in line Excommunication and Interdict kept kings and princes in line
{}