The Prince has significant speeches in both Act 1 Sc. 1 and Act 5
"That heaven finds means to kill your joys with love,"
The Prince banishes Romeo from Verona for killing Tybalt in Act 3.
Balthasar
The Prince stopped it.
Presumably you mean his "Queen Mab" speech in Act 4, which is about dreams, and how different people have dreams. It is a long speech with curiously little point to it. As Romeo says, "Thou talk'st of nothing."
There are three fight scenes in Romeo and Juliet. Act 1: it's a draw, called off by the Prince. Act 3: Tybalt wins, but Romeo gets revenge offstage. Act 5: Romeo wins, Paris loses.
He reminds them that the Prince has forbidden street-fighting.
Romeo gets banned from Verona in Act 3 of William Shakespeare's play "Romeo and Juliet" after he avenges Mercutio's death by killing Tybalt. Prince Escalus banishes Romeo for his actions, declaring that if he is found in Verona he will be immediately put to death.
The Prince knows that Benvolio is a trustworthy witness, despite what Lady Capulet has to say. He knows that Tybalt was the one looking for a fight and that Romeo tried to avoid it at first. Romeo only got involved after Mercutio's death, at which time Tybalt's life was forfeit to the law anyway by the same proclamation. All of these matters go in mitigation of the sentence, which is why the Prince does not sentence Romeo to death.
Tybalt, he is killed in act 3 scene 1 after he kills Romeo's good friend, Mercutio. Romeo takes his anger and self-defense out on Tybalt, and Romeo is banished from Verona for his actions.
There are a number of fights in Romeo and Juliet, but if you mean the one in Act 1 Scene 1, the Prince, Escalus, stopped it.
These words were spoken by Lord Capulet in Act 3, Scene 1 of Romeo and Juliet. Lord Capulet is appealing to Prince Escalus for justice after Tybalt is killed by Romeo. He insists that Romeo must pay for his crime with his life.