The sumerian standard of ur is Ziggurat
Canada and all land east of the Mississippi River
<span>atmospheric perspective.
</span>
<span>Da Vinci is largely responsible for formulating the rules of the effects of light and air in the landscape. It was a </span><span>method of creating the illusion of depth, or
recession, in a painting or drawing by modulating color to simulate
changes effected by the atmosphere on the colors of things seen at a distance.</span>
Baldassare Castiglione wrote the Book of the Courtier from 1508 until it was published in 1528. (B).
