What does this map say about the US: Culture Exercise

This is a map of the United States with lights representing McDonalds franchises.

In the United States, the furthest you can get from a McDonalds is 141 miles.

What does this assume about our world (the fact that the furthest you can get, in America, is 141 miles away)?

What does it assume about the way the world should be?

What does it make possible (easy question) ?

What does it make impossible, or at least more difficult?

What new culture is created in response to this phenomenon?