The portrait of Paul Revere by John Copley is in the style, as was prevalent in Europe at the same time and the official style of the French Revolution.

The period that marks the paleolithic era is between the 250,000 to 10,000 years.

Perspective is important because it enabled the 3 dimensional world to be translated into the 2d world of the picture plane. this had an immediate impact on the representation of reality in art and design. 

Answerbyzantine

Yes the gradesaver is missing.