Final answer:
When the setting changes to the towns, a new conflict develops where the townspeople become angry at the migrants due to the increase in population and demands for resources.
Step-by-step explanation:
When the setting changes to the towns in lines 29-38, a new conflict develops where the townspeople become angry at the migrants. This is evident in the passage where it is mentioned that city residents blamed recent arrivals for the ills of the cities, from overcrowding to a rise in crime. Activist groups even pushed for anti-immigration legislation. This conflict arises due to the increase in population and the demands for resources.