As American settlement expanded onto the Great Plains and other parts of the American West through the nineteenth century, settlers faced a genuine and significant practical problem: this region largely lacked the wood and stone traditionally used to build fences in the more forested eastern regions of the country, making it difficult and expensive to mark boundaries, protect crops from free-ranging livestock, or establish the kind of enclosed, defended land ownership that settlers moving west generally wished to establish. Cattle in this period generally ranged freely across vast, unfenced stretches of open land, a system that worked reasonably well for large-scale cattle ranching but created significant, ongoing conflict with settlers attempting to farm crops, since free-ranging cattle would regularly damage unfenced fields.
Joseph Glidden, an Illinois farmer, patented a specific, twisted-wire barbed wire design in 1874 (building on and refining several earlier, less successful barbed wire concepts, including one he reportedly saw demonstrated at a county fair that same year) that proved cheap to produce, relatively easy to install, and highly effective at containing livestock despite using only a fraction of the material a solid wood or stone fence would require. Barbed wire spread with remarkable speed across the American West through the following decade, fundamentally transforming land use: it enabled individual farmers to cheaply and effectively fence and defend their claimed land for the first time, but it also enabled large ranching operations to fence enormous tracts of land, including land not always legally theirs to enclose, leading to significant, sometimes violent conflicts (sometimes called the 'range wars') between fencing ranchers, farmers, and traditional open-range cattle drovers whose established cattle trails were increasingly blocked by the rapidly spreading fence lines. By the 1880s, the traditional open range and the long-distance cattle drives it had supported were effectively ended across most of the American West, replaced by a landscape of enclosed, individually owned and fenced land.