Problem of two emperors
subject: Category:Byzantine Empire–Holy Roman Empire relations
subject: Category:Byzantine Empire–Carolingian Empire relations
perrow: 2
subject: Category:Politics of the Holy Roman Empire
subject: Category:Medieval politics
footer: Left: Catherine the Great's "Greek Plan". Red marks the planned borders of the restored Byzantine Empire under her grandson Konstantin Pavlovich, blue marks the planned borders of the "Kingdom of Dacia" under Grigory Potemkin. The compensations for the Habsburg monarchy are marked with yellow and the compensations for Venice are marked with blue-green.
footer: The choice of the Holy Roman emperor Frederick I Barbarossa to march through the Byzantine Empire during the Third Crusade in 1189 caused the Byzantine emperor, Isaac II Angelos , to panic and nearly caused a full-scale war between the Byzantine Empire and Western Christianity.
volume: 3
total width: 410
subject: Category:History of the Ottoman Empire
subject: Category:History of diplomacy
pages: 61
label: 雙帝問題 @zh
title: PHILIP I OF TARANTO
description: притязания императоров Востока и Запада на титул римского императора в Средневековье @ru
description: Begriff aus der Geschichte von Ostrom und Westrom vor 800 @de
image: Friedrich I. Barbarossa.jpg
subject: Category:Eastern Orthodox–Catholic conflicts
page: 1652
subject: Category:Naming controversies
label: Problema dei due imperatori @it
description: 유럽에서 로마의 황제에 대한 논쟁 @ko
subject: Category:Holy Roman Empire–Ottoman Empire relations
subject: Category:Schisms from the Eastern Orthodox Church
subject: Category:Byzantine Empire–First Bulgarian Empire relations
subject: Category:Holy Roman Empire–Russia relations
subject: Category:Byzantine Empire–Empire of Trebizond relations
subject: Category:History of the Byzantine Empire
image: Greek Plan Catherine the Great.png
subject: Category:2 (number)
image: Great Catherine's dream.png
label: Zweikaiserproblem @de
subject: Category:Rival successions
footer: Right: Close-up of the intended approximate borders of the restored Byzantine Empire and the Kingdom of Dacia .
subject: Category:Former monarchies of Europe
align: right
label: 두 황제 문제 @ko
url: https://archive.org/details/the-oxfrod-dictionary-of-byzantium-vol.-1-oup-1991/The%20Oxfrod%20Dictionary%20of%20Byzantium_Vol.%203_OUP_1991/page/1651/mode/2up?q=%22Philip+I+of+Taranto%22|last=Talbot|first=Alice-Mary|author-link=Alice-Mary Talbot
description: terme historiographique @fr
subject: Category:International disputes
description: a problem arising when multiple people claim the title of emperor
description: disputa entre los emperadores bizantinos y del Sacro Imperio Romano Germánico acerca de qué monarca poseía legítimamente el título de emperador romano @es
width: 150
width: 182
chapter: The Imperial Ideology
image: 144
type: Thing
width: 174
description: disputa tra i sovrani dell'Impero Romano d'Oriente e del Sacro Romano Impero per il legittimo titolo di imperatore romano @it
subject: Category:National questions