American Progress is an 1872 painting by John Gast, a Prussian-born painter, printer, and lithographer who lived and worked most of his life during 1870s in Brooklyn, New York. American Progress, an allegory of manifest destiny, was widely disseminated in chromolithographic prints.
I just watched that one, too, and perfect timing for Native American heritage day. It was such a sad story. I'm not very hopeful that America will ever do right by either the bison or the Native Americans.