The major victorian poet whose work was considered optomistic and innovative was

Browning is a major Victorian poet who voiced the mood of optimism in his works. For Browning the intellect was more important than the music. His great knowledge was the result of his self-study and travels. His reputation is higher as the writer of dramatic monologue. One of his successful dramatic poems is Pippa Passes. 

1. He thinks Romeo is there to insult his family because of the ongoing feud.

Tybalt is an explosive and easily angered character. Moreover, he cares deeply about his family's honour. 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.