New Mexico's territorial period and early statehood marked a transformative era. From 1848 to 1912, the region shifted from Mexican to American control, experiencing significant political, economic, and cultural changes. Key events included the Treaty of Guadalupe Hidalgo, the Gadsden Purchase, and the arrival of the railroad. The path to statehood involved complex debates over land rights, cultural identity, and political power. New Mexico's admission as the 47th state in 1912 brought new challenges and opportunities, shaping its unique blend of Anglo, Hispanic, and Native American influences that continue to define the state today.