The Santa Fe Trail was a major trade route in the 18th and 19th centuries that connected Santa Fe, New Mexico, with Independence, Missouri. The trail was used by both Spanish and American traders to transport goods between the two regions.
To support military campaigns.
The Spanish also built the road between Santa Fe and Mexico City to support military campaigns in the region. The road allowed troops and supplies to be moved quickly and easily between the two cities.
To promote colonization.
The Spanish built the road between Santa Fe and Mexico City to encourage colonization of the region. The road made it easier for settlers to travel to and settle in the area.