It's saying that Atticus is a respectable person who doesn't see race as a reason to or to not defend someone; he's not racist. It shows that racism in the south is common, and that because of that, Scout has grown up being taught to be racist. Atticus is trying to turn her away from that and get her to focus on the person's true self, not the color of their skin.
Roderick twin sister and victim of catalepsy, a mysterious incapacitating illness.
Answer:
The main reason could be the overexploitation since Cyrenaica became a Roman senatorial province, and the abandonment of the previous strict control over its collection.