What are the main purposes for building fences?

What ideas are suggested about fences in the following photos?

Collect images of fences. Can you find images that seem to suggest an idea related to a course focus question?

Create your own photo essay or bulletin board poster(try Adobe Indesign) featuring a photograph of a fence.

Make sure your poser can be read from about 2 meters away. Your photoessay should contain 3-5 images with only a couple sentences arguing your photo’s connection to your focus.