1865-1900 Realism, which is nothing more and nothing less than the truthful treatment of material. Realism was imported from Europe.
One sub-set of realism is regional realism.
Realism: you can represent reality in an object way. Realism states that there is no plot in reality.
The regional realists wanted to preserve the peculiarities of certain regions, to preserve the colors that are particular to the region. The language, the things that are respected and such.