A map shows the post offices under review for possible closures. (Image from Save the Post Offices.)

As the country pushed westward, the map filled with the chicken pox marks of growth. In its last minutes, the video mirrors a different map, created on Google Maps by blogger Steve Hutkins. Hutkins started the blog “Save the Post Office,” to track the closures of offices, many in rural corners of the country.

It makes one wonder if the video from 1900-2100 will show the opposite dwindling of dots:

(Via Boing Boing)