What is the characteristic feature of the neighboring community among the Slavs?

A feature of the community was the joint ownership of land, it belonged to the community, which in Russia was called “mir”. It existed for a long time, from the pre-state period (VII-VIII centuries) to the beginning of the XX century, even Stolypin carried out the reform of the community. The rest of the options are not suitable, especially about the monetary unit.

Posad. It was there that traders and artisans lived. Even the names of some cities appeared like “Pavlovsky Posad”, for example.

Only Danube Bulgaria is suitable from the listed countries. The rest were too far from Byzantium.