How does the modern era differ from the post-classical era?

The five possible reasons explaining why art may be created are

Select one work of art from the gallery that culturally represents the period it was created within. (i choose "the well of moses")why did you select this work of art or architecture? when selecting and writing about your work organize your thoughts by addressing the following questions. keep in mind that the last question should get the most attention in your short essay. when was it made? where was it made? what is the material? who made it? why was it made?

List as many characteristics as you can to describe each style realism and propaganda