significantly reduced open land. A frontier is a zone of contact at the edge of a line of settlement. Leading theorist Frederick Jackson Turner went deeper, arguing that the frontier was the scene of a defining process of American civilization: "The frontier," he asserted, "promoted the formation of a composite nationality for the American people." He theorized it was a process of development: "This perennial rebirth, this fluidity of American life, this expansion westward...furnish[es] the forces dominating American character." Turner's ideas since 1893 have inspired generations of historians (and critics) to explore multiple individual American frontiers, but the popular folk frontier concentrates on the conquest and settlement of Native American lands west of the Mississippi River, in what is now the Midwest, Texas, the Great Plains, the Rocky Mountains, the Southwest, and the West Coast. Enormous popular attention was focused on the Western United States (especially the Southwest) in the second half of the 19th century and the early 20th century, from the 1850s to the 1910s. Such media typically exaggerated the romance, anarchy, and chaotic violence of the period for greater dramatic effect. This inspired the Western genre of film, along with television shows, novels, comic books, video games, children's toys, and costumes. As defined by Hine and Faragher, "frontier history tells the story of the creation and defense of communities, the use of the land, the development of crops and hotels, and the formation of states." They explain, "It is a tale of conquest, but also one of survival, persistence, and the merging of peoples and cultures that gave birth and continuing life to America." Turner himself repeatedly emphasized how the availability of "free land" to start new farms attracted pioneering Americans: "The existence of an area of free land, its continuous recession, and the advance of American settlement westward, explain American development." Through treaties with foreign nations and native tribes, political compromise, military conquest, the establishment of law and order, the building of farms, ranches, and towns, the marking of trails and digging of mines, and the pulling in of great migrations of foreigners, the United States expanded from coast to coast, fulfilling the ideology of Manifest Destiny. In his "Frontier Thesis" (1893), Turner theorized that the frontier was a process that transformed Europeans into a new people, the Americans, whose values focused on equality, democracy, and optimism, as well as individualism, self-reliance, and even violence. Terms