Which region of the United States has the most significant area of range?

The Southwest region of the United States is known for its vast areas of diverse landscapes that include deserts, mountains, canyons, and plateaus. This region encompasses states like Arizona, New Mexico, Texas, and parts of California, which collectively feature extensive ranges suitable for various ecosystems and species.

The significant area of range in the Southwest is primarily attributed to its varied topography and climate, which support a wide variety of habitats, from arid desert environments to lush mountain ranges. These diverse conditions provide ample opportunities for wildlife and plant species to thrive, resulting in a rich biodiversity that is characteristic of the Southwest.

Additionally, the spacious land accounts for large expanses of ranching and agriculture, which have historically been a part of the cultural and economic fabric of this area. The unique geological features and climatic conditions of the Southwest distinguish it significantly from the other regions mentioned, leading to a more extensive area of range overall.