Answer:
He thinks Romeo is there to insult his family because of the ongoing feud.
Explanation:
Tybalt is an explosive and easily angered character. Moreover, he cares deeply about his family's honor. Therefore, he is immediately upset when he realizes Romeo is at the party. He knows that his family and Romeo's family are enemies, and therefore, he assumes that Romeo is there in order to insult the family. However, he is unable to attack Romeo because of the intervention of Capulet.
1st gen Americans are often in conflict with their parents because they don't understand their parents' customs or personal histories.
It’d be b to expose ridiculousness and pretentiousness of Victorian culture
She explains to scout that boo stays inside simply because he wants to, that he doesn't want to come out. implying to scout to not "judge a book by its cover"