Answer:
You can name Jean-Jacques Rousseau, John Locke, and/or Thomas Hobbes
Explanation:
It is the border that is around the original art piece itself. So the artwork is either placed on a board that is then cut 1/2 an inch around the artwork itself. Or in other cases the canvas, paper, etc is masked off 1/2 an inch around the edge of the paper.
Hope this helps!