Final answer:
New Mexico, Arizona, and Montana are members of the Western Region of the National FFA Organization, encompassing the broad geographical area of the Mountain West.
Step-by-step explanation:
New Mexico, Arizona, and Montana are all part of the Western Region of the National FFA Organization. The National FFA (formerly known as Future Farmers of America) divides the United States into four regions: the Western, Southern, Central, and Eastern Regions. The states mentioned fall into the borders of the Western Region which covers a broad area, including parts of the Mountain West such as the Rocky Mountains, Sierra Nevada, and the large Intermontane Basins and Plateaus. Though your question specifies three states, it's part of a broader context of the Western Region's economic and population growth and geographical features.