Answer:
The settlers' lack of manners in their treatment of Native Americans.
Step-by-step explanation:
This is the main idea that Franklin tries to convey in this passage. In these lines, Franklin tells us that when Native Americans come into the settlers' towns, they are often made uncomfortable by curious settlers that stare at them and get in their way. Franklin says that, even though the Native Americans are just as curious, they satisfy their curiosity in much more polite and controlled ways.