Final answer:
When the Prince arrives on the scene, Prince Escalus orders/decree peace and declares punishment for anyone found brawling in the streets of Verona.
Step-by-step explanation:
When the Prince arrives on the scene and The Capulets and The Montagues, Prince Escalus orders/decrees peace between the feuding families. He declares that anyone found brawling in the streets of Verona will be punished according to the severity of their actions. This decree is meant to put an end to the ongoing violence and restore peace in the city. For example, in Act 1, Scene 1, the Prince addresses the Capulets and the Montagues, saying:
'If ever you disturb our streets again,
Your lives shall pay the forfeit of the peace.'