It is principally a French phenomenon, although Spanish, Italian, and American composers contributed important examples. *

Impressionism

Explanation:

Impressionism is a form of an art movement that is common around the 19th century. During this period the impressionistic art is characterized by its ambiguous nature which is defined by the perception of the viewers.

Some of the major artists of impressions are Claude Monet, Pierre-Auguste Renoir, Édouard Manet, Edgar Degas, Paul Cézanne, etc.

Hence, it is true that IMPRESSIONISM is principally a French phenomenon, although Spanish, Italian, and American composers contributed important examples.

demand is the need and oportunity to buy a given good or service.