The Prince
This is because he was banished from Verona as he killed Tybalt, this punishment was instead of being killed.
Mantua
He challenged Romeo to a duel.
The Prince.
Romeo was banished from Verona and sent to live in Mantua.
Friar Lawrence sent the note to Romeo on the same day of Juliet's supposed death.
Tybalt wanted to duel Romeo :P
Tybalt sent the challenge because he was angry that Romeo came to the party and that Capulet scolded Tybalt for not enduring Romeo. Tybalt was embarrassed by this and wanted revenge
The Prince
Tybalt sends Romeo a letter containing a challenge.
Tybalt sent Romeo a letter challenging him to a duel.
it said suck my ......................
Tybalt sent a challenge letter to romeo because he came to the Capulet's party uninvited.