The Santa Fe Trail was a historic trade route established in the early 19th century, connecting Missouri to Santa Fe, New Mexico. It played a crucial role in the westward expansion of the United States, facilitating commerce and cultural exchange between the eastern states and the southwestern territories. Spanning approximately 900 miles, the trail was used by traders, settlers, and military expeditions. It became particularly important during the Mexican-American War and the California Gold Rush, as it provided a vital link for supplies and communication. The trail's legacy is preserved today in various historical sites and museums.