The Bulgarian army had suffered heavy casualties…

The Bulgarian army had suffered heavy casualties as a result of the battle of Belasitsa; these losses cannot be restored.

The ability of the central government to control the peripheral and interior provinces of the Empire is reduced and the actions of the local and provincial governors become more decisive for the outcome of the war with the Empire.

Many of them have voluntarily surrendered to Basil II.

Samuel's successors had been his son Gavril (murdered in 1015) and a nephew Ivan (killed in battle in 1018), after the revived Bulgarian kingdom is incorporated into the empire of Constantinople.

Basil allows the country practical autonomy, however.

The battle also has an impact on the Serbs and the Croats, who are forced to acknowledge the supremacy of Constantinople after 1018.

The borders of the Roman Empire are restored to the Danube for the first time since the seventh century, allowing Constantinople to control the entire Balkan peninsula from the Danube to the Peloponnese and from the Adriatic Sea to the Black Sea.