For he thinks that this kind of friendship can exist only when one spends a great deal of time with the other person, participating in joint activities and engaging in mutually beneficial behavior; and one cannot cooperate on these close terms with every member of the political community.
We just read this book so it depends on if the Socs and Greasers or S v.S or G v. G. For S v. G there were certain things that both groups couldn't do. The rules were established by both groups agreeing.
You would think that the black sailors steal that's why they could become pirates
The speaker describe differently the springtime scene because the spring is of different state compared to the current scene that he/she is describing. The current scene talks about the dead plants on the road during winter while the springtime signals the the coming to life of those plants. It is definitely a different scene that requires a change in the description to emphasize its entrance.