When their migratory movements ended, there appeared among the Slavs the first rudiments of state organizations, each headed by a prince with a treasury and a defense force. Moreover, it was the beginnings of class differentiation, and nobles pledged allegiance either to the Frankish/ Holy Roman Emperors or the Byzantine Emperors.
What appeared among the Slavs when their migratory movements ended?
{'text': 'the first rudiments of state organizations', 'answer_start': 69}