The goal of descriptive writing would be to involve the reader enough that he can actually visualize the details.
He destroys her flowers
Jem is so angry about the comments Mrs. Dubose made about Atticus being no better than 'the people' he is defending, that the takes Scout's baton and ruins all of her flower bushes. He does this out of anger and impulse, trying to defend the name of his father and his family.
Collage comes from the French language.
Hope this Helps!
The three values I believe Americans hold are the most popular ones stated in our constitution, "life, liberty, and property/pursuit of happiness"