Here is a link to a website containing notes on Worlds of Upheaval which I believe may help:
Studying the Worlds of Upheaval elective allows you to explore different aspects of your novels in unique ways. For Frankenstein, by considering the diverse perspective of the socio-political upheaval of Shelley's time, you will be able to gain an appreciation for ways of thinking during that...
jpenglishtutoring.com.au
Additionally, here is a link to an essay on Worlds of Upheaval which you might be able to use as a guide for your preparations/revision:
Download this Essay document for HSC - English Extension 1. Find free HSC resources like study notes, essays, past papers, assignment, case studies & ...
www.acehsc.net
I haven't been able to find much on North and South unfortunately, but I hope the above helps!