Genre of novels and short stories, motion pictures, and television and radio shows set in the American West, usually during 1850–1900, when the area was opened to white settlement. Though basically an American creation, it has counterparts in the gaucho literature of Argentina and in tales of the settlement of the Australian Outback. Conflicts between white pioneers and Native Americans and between cattle ranchers and fence-building farmers form two basic themes. Cowboys, the town sheriff, and the U.S. marshal are staple figures, and lawlessness and gun violence are standard. Owen Wister's The Virginian (1902) is regarded as the seminal western novel; the popularity of the genre peaked in the early and middle decades of the 20th century and declined somewhat thereafter.