How did the Brooklyn Bridge change New York City?

On May 24, 1883, the Brooklyn Bridge over the East River opened, connecting the great cities of New York and Brooklyn for the first time in history. ... The connection it provided between the massive population centers of Brooklyn and Manhattan changed the course of New York City forever.

Explanation:

Well "universe of obligation" is when you are neighborly and help each other out. But in the South the "universe if obligation" is simply being Christian. So basically they treat people the way they would want to be treated. Since Miss. Maudie is a lonely woman and is basically helpless, people feel as if they should help someone like her.