What territory was occupied by the Empire of Charlemagne, the Byzantine Empire under Justinian

What territory was occupied by the Empire of Charlemagne, the Byzantine Empire under Justinian, the Arab Caliphate under Harun al-Rashid?

Empire of Charlemagne: the territory of modern France (except Brittany), the lands of the Saxons up to the Rhine, northern Italy, Bavaria, Austria, part of Croatia, part of Spain.

Byzantine Empire under Justinian: Greece, part of the Balkans, all of Asia Minor, Syria, Palestine, Phenicia, Egypt, Pentapolis, African coast, part of Spain, Italy, Sicily, Corsica.

Arab Caliphate under Harun al-Rashid: Egypt, Syria, Palestine, Iran, Iraq, Central Asia, Afghanistan, African coast, Caucasus, part of India.