…northwest to present-day Belgrade.

Belgrade > Beograd Serbia Serbia View →

Krum of Bulgaria View → Leo V the Armenian View → Michael I Rangabe View → Theodore the Studite View →

Slavs, South View → Greeks, Medieval (Byzantines) View → Bulgarian Empire (First) View → Bulgarians (South Slavs) View → Macedonia, East Roman Theme of View → Roman Empire, Eastern: Non-dynastic View →

Byzantine-Bulgarian Wars View → Bulgarian-Byzantine War of 809-17 View →

Weapons View →

Commerce View → Labor and Service View → Conflict View → Faith View → Government View → Custom and Law View → Technology View →