New Mexico Content Standards
NM.II: Geography: Students understand how physical, natural, and cultural processes influence where people live, the ways in which people live, and how societies interact with one another and their environments. Students will
2-E: Explain how economic, political, cultural and social processes interact to shape patterns of human populations and their interdependence, cooperation and conflict:
2-E:1. Explain how physical features influenced the expansion of the United States.