How did the development of permanent settlements change the types of buildings that were needed?

Settlements encouraged families to live separately to dominate the resources in a crowded village. Settlements required buildings that could hold larger amounts of people for meetings and other gatherings. Settlements were designed with materials that could be taken apart quickly to follow herds in other locations.

Explanation:

the sea slugs belong to the same class

sorry to break it to ya but no one can answer your question it's just

jk but i am serious about the part that most people cant answer it beacuse you did not mention the section you are talking about. but it would if you added some detail and were a bit more specific.