In the nineteenth century why is it more necessary for art to provide accurate representation of life and objects

In the 19th century. it was more necessary for art to provide an accurate representation of life and objects.

Realism supported the acute observation of objects, portraits, and life situations. Realism depicted nature and things in a modest and detailed way. In the 19th century, France had many Realism artists in literature and painting. Among the important artists of Realism, we find Gustave Courbet and Jean-Francoise Millet. They found more necessary for art to provide an accurate representation of life and objects

i think this is true