I would start by writing a brief introduction about the HIC and a brief overview how it has undergone urban change
I would write one paragraph for any changes that took a short time and those that took more time. I would also make sure i wrote about the social economic and environmental reasons why the HIC has undergone urban change
Finally i would write a short conclusion to summarise what I had said and which factor of how the HIC had undergone urban change I thought was the best.