Assertion: pope's successor | /r/CapableOf | counter this encroachment
Facets:
value: on byzantine territory
type: LOCATION
Source sentences:
text: Unable to counter this encroachment on Byzantine territory, Nikephoros' successor Michael I Rangabe capitulated; in return for the restoration of the captured territories, Michael sent Byzantine delegates to Aachen in 812 who recognized Charlemagne as Basileus.