He banishes Romeo from Verona.
You mean Prince Escalus? He rules Verona.
The Prince gives Romeo the punishment of Banishment.
Your nothing but a decree.
After the street brawl of Act 1 Scene 1 Prince Escalus announces that in future streetfighting in Veronal will be a capital offence. This is why Romeo has to flee to Padua when he kills Tybalt. He cannot plead self-defence, because streetfighting is a capital offence whatever the provocation.
We must abide by the consulate's decree.
A decree is something given to someone that is legally an official order. A good sentence would be, the divorce decree was finally filed and finalized.
In Act 3, Scene 1 of Hamlet, the prince forbids Ophelia from having any contact with him, as he is pretending to be mad. He instructs her to go to a nunnery to preserve her innocence and avoid the corruption of the world.
The king issued a decree to lower taxes in the kingdom.
This power arose only on the granting of a decree of divorce.
"I decree you to open your books to page 125 and answer the questions given to you!" Decree means a firm law or order.
At the end of Act III Scene 1 of Romeo and Juliet, the Prince, who represents the law, holds a trial to determine what to do about the killing of Tybalt. Back in Act I he made a decree that people fighting in the streets would be put to death. Mrs. Capulet, Tybalt's auntie, takes the part of prosecutor. Montague, Romeo's dad, takes the part of defence counsel. Benvolio is the chief witness, and gives his evidence truthfully as we know because we are also witnesses to what happened.Mrs. Capulet, for the prosecution, says that Benvolio is not an impartial witness, and even so he admits that it was Romeo who killed Tybalt. Probably, she says, a bunch of Montagues jumped poor defenceless Tybalt. She concludes with the ringing "Romeo slew Tybalt; Romeo must not live."The Prince is, however, prepared to accept Benvolio's account. How, he asks, should we deal with the fact that Tybalt had only minutes before killed Mercutio in a different street brawl. Defense Counsel Montague hears his cue and speaks up. By killing Mercutio in a street brawl, Tybalt broke the same law that is being urged against Romeo, he says, so Tybalt's life was forfeit in any case. Romeo was just doing what the Prince's hangman would have been required to do eventually. However he also mentions that Romeo was Mercutio's friend. This is probably a bad move strategically, since it suggests that Romeo's motive was not enforcing the law but revenge for the death of his friend (as is in fact the case). This "getting revenge for my friend" thing is what keeps fuelling the feud. The Prince cannot pardon Romeo completely under these circumstances; he can only commute the sentence.
My all powerful parents issued a decree that I can't go out on week nights.